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Senior Manager
Joined: 19 Oct 2004
Posts: 318
Location: Missouri, USA
Followers: 1

Kudos [?]: 23 [0], given: 0

00:00

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions
Attachments

tyre.doc [25 KiB]

_________________

Let's get it right!!!!

Director
Joined: 25 Jan 2004
Posts: 728
Location: Milwaukee
Followers: 2

Kudos [?]: 12 [0], given: 0

Let Dia, Speed of small ring be Dsp, x respectively
and Large ring be Dsl,Nl respectively
& Vs & Vs be velocity in inches per sec

it is given that Vd = Vs
that is Pi * Dsp *x = Pi * Dsl * Nl

we get Nl = Rev/sec = 28/35*x

Rev/min = 28/35 * x * 60 = 48x
_________________

Praveen

Director
Joined: 07 Nov 2004
Posts: 692
Followers: 4

Kudos [?]: 30 [0], given: 0

Distance travelled by tyre = (circumference of tyre) * (# of revolutions per unit time)

"x" is the # of revolutions/ sec of smaller tyre S.
Ds = 28*pi*x (per second)

Let "y" be the # of revolutions/ sec of larger tyre L.
Dl = 35*pi*y (per second)

Given Ds= Dl

y = 4x/5

Revolution per minute = y*60 = 48x
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