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Suppose we were in a spaceship in free fall, where objects are weightl

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Re: Suppose we were in a spaceship in free fall, where objects are weightl [#permalink] New post   14 Sep 2022, 22:22
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Pathshala wrote:
Can anyone explain, how option B is different from option E?

5. The primary purpose of the passage is to

A. analyze a natural phenomenon in terms of its behavior under special conditions
B. describe the steps by which a scientific measurement is carried out
C. point out the conditions under which a scientific procedure is most useful
D. contrast two different uses of a methodological approach in science
E. explain a method by which scientists determine an unknown quantity


Between (B) and (E), the real difference lies in "describe the steps" and "explain a method".
Describe the steps would be "first, tie the object to a spring... then swing it really fast ..." etc. That is not what the passage does.
It tells you the method used to measure the masses. It explains you the concept and then how it is applicable to a star system. Hence (E) is better than (B).
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Re: Suppose we were in a spaceship in free fall, where objects are weightl [#permalink] New post   17 Sep 2022, 15:31
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Notice the colored parts of B:
Pathshala wrote:
B. describe the steps by which a scientific measurement is carried out


"Measurements" are taken directly. Inferring or calculating a quantity from other figures is NOT "measuring" it.

Each paragraph focuses on a procedure that can be used to infer a particular mass from other measurements using principles of physical science.
These procedures take certain measurements as inputs, but are not measurements themselves.

Note further that the only "measurement" that IS, in fact, discussed in the second paragraph—"measuring the distance between stars"—is not explained in specific terms at all. Again contradicting B, there are no "steps" described for this measurement (about which I'm wondering myself! How do you 'measure' a distance between two things that are light-years away?)


E. explain a method by which scientists determine an unknown quantity[/quote]

This is the right answer. It's true that two separate procedures are described (one per paragraph), each of which determines a different sort of unknown quantity—but, as confirmed near the beginning of the second paragraph, the point of the first procedure (first paragraph) is just to serve as the basis of an analogy by which the second procedure (the main focus) might be better understood.

GMAC's short two-paragraph passages are often—but not always!—structured this way, with the first paragraph serving mainly to set up the second in some way and therefore not figuring into a compact statement of 'main idea' or 'primary purpose'.
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Re: Suppose we were in a spaceship in free fall, where objects are weightl [#permalink] New post   17 Sep 2022, 15:40
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abhishektyga wrote:
Why is C. the right answer for question 1? It asks what can be inferred but option C is directly mentioned in the first para. Please explain


In a rigorously formal sense, anything that is not explicitly stated by an author, but can be deduced from statements that ARE made by the author, is "implied" or "suggested". Or, equivalently, you (the reader) can "infer" such a statement.

In this problem, we have separate statements in separate paragraphs that Procedure X can be used to calculate a certain mass, and that Procedure Y can be used to calculate a different type of mass.
The author does not explicitly make a statement connecting these two observations—i.e., there's nothing IN THE PASSAGE that SAYS "...the same type of goal as the other procedure"—so that's still technically an inference.

I agree with your implied (!!) point that the logical leap involved in this particular inference is extremely small. In other words, there's very little conceptual distance between "This thing is true for X and this thing is also true for Y" and "X and Y have this thing in common".
But, still... this is something the author didn't actually write in the text, so it's an inference. ¯\_(ツ)_/¯
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Re: Suppose we were in a spaceship in free fall, where objects are weightl [#permalink] New post   30 Oct 2022, 00:34
For the primary purpose question, how is last option correct?
I says "method" but we have discussed two methods. Shouldn't B be the correct answer choice?
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Re: Suppose we were in a spaceship in free fall, where objects are weightl [#permalink] New post   30 Oct 2022, 13:44
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Diksha123456789 wrote:
For the primary purpose question, how is last option correct?
I says "method" but we have discussed two methods. Shouldn't B be the correct answer choice?


The PRIMARY purpose is to explain the method described in the second paragraph—i.e., the technique that astronomers use to determine the mass of certain celestial objects.

The material in the first paragraph, about methods of weighing ordinary Earth objects using relatively simple machines and simple steps, is only there as an analogy to help the reader intuit the stuff in the second paragraph, which is the main point.
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Re: Suppose we were in a spaceship in free fall, where objects are weightl [#permalink] New post   30 Oct 2022, 13:52
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Diksha123456789 wrote:
I says "method" but we have discussed two methods. Shouldn't B be the correct answer choice?


Choice B says "a scientific measurement", which is still singular—so, if you don't like the singular nature of choice E, then you shouldn't like choice B (which uses a singular construction for precisely the same thing) either.

In any case, the real issue with choice B is the word "steps". A quick look through the second paragraph will quickly reveal that steps absolutely DO NOT appear there.
In fact, the second paragraph pretty much contains everything EXCEPT the steps of the process! It mentions starting information, end goals, and (in generic broad-strokes terms) the overall nature of the mathematical/scientific process used to get from the start to the end. The ACTUAL STEPS that would get us from the start to the end, however, aren't there.

e.g.,

By observing the time required for the stars to circle each other (the period) and measuring the distance between them, we can deduce the restraining force, and hence the masses.

—> What is the ACTUAL PROCEDURE (step by step) for measuring the distance between the stars?

—> What are the ACTUAL CALCULATIONS (step by step) for deducing the restraining force?
—> How about the ACTUAL CALCULATIONS for deriving the masses (= the end goals) from that result?

Absolutely nothing here to answer any of these three questions. No steps for anything.
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Re: Suppose we were in a spaceship in free fall, where objects are weightl [#permalink] New post   30 Oct 2022, 14:01
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Diksha123456789 wrote:
I says "method" but we have discussed two methods.



And one more thing you should absolutely keep in mind on problems like this:
• You can only have a "MAIN IDEA" in contrast to at least one SIDE POINT / PERIPHERAL IDEA / LOWER-PRIORITY IDEA.
• You can only have a "PRIMARY PURPOSE" as opposed to some sort of SECONDARY purpose.
etc etc

which means that... the "main idea" or "primary purpose" or other answer to a BIG-PICTURE RC QUESTION will absolutely NEVER mention EVERYTHING that appears in the text.[/i]
(In the same kind of way.. If a friend of yours goes to a talk, and then you ask this friend later "What did the speaker MAINLY talk about?"—If your friend actually spells out every single point that the speaker made the whole time, then you are not actually getting a valid response to the question that you asked.)
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Suppose we were in a spaceship in free fall, where objects are weightl [#permalink] New post   31 Oct 2022, 04:46
Quote:
Which of the following best describes the relationship between the first and the second paragraph of the passage?

A The first paragraph provides an illustration useful for understanding a procedure described in the second paragraph.

C The first paragraph evaluates the usefulness of a procedure whose application is described further in the second paragraph.


Dear RonTargetTestPrep

would you please help how to decided between A and C ?

thanks a lot.
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Suppose we were in a spaceship in free fall, where objects are weightl [#permalink] New post   12 Nov 2022, 00:55
zoezhuyan wrote:
Quote:
Which of the following best describes the relationship between the first and the second paragraph of the passage?

A The first paragraph provides an illustration useful for understanding a procedure described in the second paragraph.

C The first paragraph evaluates the usefulness of a procedure whose application is described further in the second paragraph.


Dear RonTargetTestPrep

would you please help how to decided between A and C ?

thanks a lot.


Dear zoezhuyan,
concerning the option C, 1st paragraph does not provide evaluation such as pluses and cones; it is merely presents the hypothesis how the unknown mass could be determent.

Quote:
The unknown mass could be determined, however, by placing the object on a spring scale and swinging the scale in a circle at the end of a string.


Hope it helps :)
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Suppose we were in a spaceship in free fall, where objects are weightl [#permalink] New post   01 Aug 2023, 08:49
KarishmaB Sajjad1994 Ninja
in question 5, can you please let me know why option A is wrong?
I am confuse between a and e.
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Re: Suppose we were in a spaceship in free fall, where objects are weightl [#permalink] New post   01 Aug 2023, 09:48
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priyanshii26 wrote:
KarishmaB Sajjad1994 Ninja
in question 5, can you please let me know why option A is wrong?
I am confuse between a and e.


1:
https://gmatclub.com/forum/suppose-we-w ... l#p2544504

2:
https://gmatclub.com/forum/suppose-we-w ... l#p2670038

3:
https://gmatclub.com/forum/suppose-we-w ... l#p2875986

4:
https://gmatclub.com/forum/suppose-we-w ... l#p2959692

5:
https://gmatclub.com/forum/suppose-we-w ... l#p3070906

All the above posts discusses question #5
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Re: Suppose we were in a spaceship in free fall, where objects are weightl [#permalink] New post   02 Aug 2023, 03:20
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priyanshii26 wrote:
KarishmaB Sajjad1994 Ninja
in question 5, can you please let me know why option A is wrong?
I am confuse between a and e.


Let me add one more thing here - when you say an option could be the answer, every word in the option needs to fit the passage.

A. analyze a natural phenomenon in terms of its behavior under special conditions

natural phenomenon - two stars in a double-star system circle one another
What special condition of the two star system are we talking about? None.

We are talking about how we can figure out their masses.
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Re: Suppose we were in a spaceship in free fall, where objects are weightl [#permalink] New post   25 Sep 2023, 20:37
Sajjad1994 KarishmaB GMATNinja Can you please let me know how option b is correct in question 2?
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Re: Suppose we were in a spaceship in free fall, where objects are weightl [#permalink] New post   26 Sep 2023, 11:21
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priyanshii26 wrote:
Sajjad1994 KarishmaB GMATNinja Can you please let me know how option b is correct in question 2?


Explanation


2. According to the passage, the tension in the string mentioned in highlight text is analogous to which of the following aspects of a double-star system?

Difficulty Level: 500

Explanation

The passage describes how the tension in the string, when an object is swung in a circle on a spring scale, is analogous to a certain aspect of a double-star system. Let's analyze each answer option to determine which aspect of the double-star system it corresponds to:

A. This corresponds to the motion of one of the stars in the double-star system, but it is not analogous to the tension in the string mentioned in the passage.

B. This is the correct answer. The passage explicitly states that the attractive force (gravitational attraction) between the stars in the double-star system is analogous to the tension in the string when an object is swung on a spring scale.

C. This corresponds to the period of their motion, but it is not directly analogous to the tension in the string mentioned in the passage.

D. This corresponds to the separation between the stars in the double-star system but is not analogous to the tension in the string.

E. This corresponds to the combined mass of the stars, which is discussed in the passage but is not directly analogous to the tension in the string.

Answer: B
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Re: Suppose we were in a spaceship in free fall, where objects are weightl [#permalink] New post   09 Oct 2023, 09:48
Quote:
3. Which of the following best describes the relationship between the first and the second paragraph of the passage?

A The first paragraph provides an illustration useful for understanding a procedure described in the second paragraph.
B The first paragraph describes a hypothetical situation whose plausibility is tested in the second paragraph.
C The first paragraph evaluates the usefulness of a procedure whose application is described further in the second paragraph.
D The second paragraph provides evidence to support a claim made in the first paragraph.
E The second paragraph analyzes the practical implications of a methodology proposed in the first paragraph.


KarishmaB GMATNinja

Could you help me understand why C is wrong? Is it atleast half-right?
Please let me know if my reasoning for eliminating C is correct:

(1) the first paragraph merely suggests/describes a "useful method" for measuring mass but doesn't evaluate (analyze the value) of that method; So, the first part is wrong.
(2) the second paragraph mentions an application/analogy of a method described in the first paragraph; So, the second part is correct.
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Re: Suppose we were in a spaceship in free fall, where objects are weightl [#permalink] New post   12 Oct 2023, 12:37
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Posted here

https://gmatclub.com/forum/suppose-we-w ... l#p2875986

SlowTortoise wrote:
Quote:
3. Which of the following best describes the relationship between the first and the second paragraph of the passage?

A The first paragraph provides an illustration useful for understanding a procedure described in the second paragraph.
B The first paragraph describes a hypothetical situation whose plausibility is tested in the second paragraph.
C The first paragraph evaluates the usefulness of a procedure whose application is described further in the second paragraph.
D The second paragraph provides evidence to support a claim made in the first paragraph.
E The second paragraph analyzes the practical implications of a methodology proposed in the first paragraph.


KarishmaB GMATNinja

Could you help me understand why C is wrong? Is it atleast half-right?
Please let me know if my reasoning for eliminating C is correct:

(1) the first paragraph merely suggests/describes a "useful method" for measuring mass but doesn't evaluate (analyze the value) of that method; So, the first part is wrong.
(2) the second paragraph mentions an application/analogy of a method described in the first paragraph; So, the second part is correct.
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Re: Suppose we were in a spaceship in free fall, where objects are weightl [#permalink] New post   12 Oct 2023, 21:14
SlowTortoise wrote:
Quote:
3. Which of the following best describes the relationship between the first and the second paragraph of the passage?

A The first paragraph provides an illustration useful for understanding a procedure described in the second paragraph.
B The first paragraph describes a hypothetical situation whose plausibility is tested in the second paragraph.
C The first paragraph evaluates the usefulness of a procedure whose application is described further in the second paragraph.
D The second paragraph provides evidence to support a claim made in the first paragraph.
E The second paragraph analyzes the practical implications of a methodology proposed in the first paragraph.


KarishmaB GMATNinja

Could you help me understand why C is wrong? Is it atleast half-right?
Please let me know if my reasoning for eliminating C is correct:

(1) the first paragraph merely suggests/describes a "useful method" for measuring mass but doesn't evaluate (analyze the value) of that method; So, the first part is wrong.
(2) the second paragraph mentions an application/analogy of a method described in the first paragraph; So, the second part is correct.



KarishmaB wrote:
Pathshala wrote:
Can anyone explain, how option B is different from option E?

5. The primary purpose of the passage is to

A. analyze a natural phenomenon in terms of its behavior under special conditions
B. describe the steps by which a scientific measurement is carried out
C. point out the conditions under which a scientific procedure is most useful
D. contrast two different uses of a methodological approach in science
E. explain a method by which scientists determine an unknown quantity


Between (B) and (E), the real difference lies in "describe the steps" and "explain a method".
Describe the steps would be "first, tie the object to a spring... then swing it really fast ..." etc. That is not what the passage does.
It tells you the method used to measure the masses. It explains you the concept and then how it is applicable to a star system. Hence (E) is better than (B).


GMATNinja wrote:
Shivikaa wrote:
Why not B ? The paragraph talks about the hypothetical situation in the first paragraph. Could you explain where am I going wrong ?


Quote:
3. Which of the following best describes the relationship between the first and the second paragraph of the passage?
A The first paragraph provides an illustration useful for understanding a procedure described in the second paragraph.
B The first paragraph describes a hypothetical situation whose plausibility is tested in the second paragraph.
C The first paragraph evaluates the usefulness of a procedure whose application is described further in the second paragraph.
D The second paragraph provides evidence to support a claim made in the first paragraph.
E The second paragraph analyzes the practical implications of a methodology proposed in the first paragraph.


We need to consider the entire statement being made in choice (B). You're right to point out that the first paragraph describes a hypothetical technique. That technique is the spring scale/small-solid-object method of measuring mass. However, does the second paragraph test the plausibility of this technique? Is that why the author is bringing up the measurement of attractive force between stars?

The answer is no. The author uses the second paragraph to present an analogous procedure. The point of the second paragraph is not to test whether we can measure mass by measuring the tension of a string between two objects. The point is to describe a different procedure for measuring the mass of stars, referencing the first paragraph as a comparable scenario.

I hope this clarifies why (A) remains the best choice!


Sajjad1994
My query comes from the fact that there are 2 seemingly conflicting opinions on whether the second paragraph is an application of the first one. I have quoted the 2 seemingly conflicting posts and highlighted the areas that I felt were conflicting.
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Re: Suppose we were in a spaceship in free fall, where objects are weightl [#permalink] New post   12 Oct 2023, 23:36
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SlowTortoise wrote:
Sajjad1994
My query comes from the fact that there are 2 seemingly conflicting opinions on whether the second paragraph is an application of the first one. I have quoted the 2 seemingly conflicting posts and highlighted the areas that I felt were conflicting.


Hello SlowTortoise

I don't want to go back in deep detail and judge the comments of other members and experts, sorry for that but can you please ask your specific question? I will try to answer it.
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Suppose we were in a spaceship in free fall, where objects are weightl [#permalink] New post   13 Oct 2023, 00:10
Sajjad1994 wrote:
SlowTortoise wrote:
Sajjad1994
My query comes from the fact that there are 2 seemingly conflicting opinions on whether the second paragraph is an application of the first one. I have quoted the 2 seemingly conflicting posts and highlighted the areas that I felt were conflicting.


Hello SlowTortoise

I don't want to go back in deep detail and judge the comments of other members and experts, sorry for that but can you please ask your specific question? I will try to answer it.


Sure Sajjad1994
Below is my question along with the specific details:

Quote:
3. Which of the following best describes the relationship between the first and the second paragraph of the passage?

A The first paragraph provides an illustration useful for understanding a procedure described in the second paragraph.
B The first paragraph describes a hypothetical situation whose plausibility is tested in the second paragraph.
C The first paragraph evaluates the usefulness of a procedure whose application is described further in the second paragraph.
D The second paragraph provides evidence to support a claim made in the first paragraph.
E The second paragraph analyzes the practical implications of a methodology proposed in the first paragraph.


Could you help me understand whether my reasoning for eliminating C is correct:
(1) The first part/half of option C "the first paragraph evaluates the usefulness of a procedure" is WRONG because the first paragraph merely suggests/describes a "useful" method for measuring mass but doesn't evaluate (analyze the value) of that method
(2) The second part/half of option C "a procedure whose application is described further in the second paragraph" is NOT WRONG because the second paragraph mentions an application/analogy of the method described in the first paragraph
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Re: Suppose we were in a spaceship in free fall, where objects are weightl [#permalink] New post   14 Oct 2023, 07:14
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SlowTortoise wrote:
Could you help me understand whether my reasoning for eliminating C is correct:
(1) The first part/half of option C "the first paragraph evaluates the usefulness of a procedure" is WRONG because the first paragraph merely suggests/describes a "useful" method for measuring mass but doesn't evaluate (analyze the value) of that method
(2) The second part/half of option C "a procedure whose application is described further in the second paragraph" is NOT WRONG because the second paragraph mentions an application/analogy of the method described in the first paragraph


Your reasoning is fine. In the first paragraph, the passage describes a hypothetical situation involving a spaceship in free fall, a spring scale, and the measurement of an object's mass. This scenario is used as an illustration to help the reader understand a concept or procedure. It's not evaluating the usefulness of the procedure or its application in a real-world context.

In the second paragraph, the passage discusses how astronomers use an analogous procedure to determine the masses of double-star systems. This paragraph describes the practical application of a similar concept involving gravitational forces and the motion of stars.

So, the relationship between the first and second paragraphs is that the first paragraph provides an illustration (the hypothetical spaceship scenario) that is useful for understanding a procedure (the gravitational mass determination of double-star systems) described in the second paragraph. Therefore, option A is the correct.
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Re: Suppose we were in a spaceship in free fall, where objects are weightl [#permalink]
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