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Mechanical Advantage

In a wheel-ax...

Question

In a wheel-axle arrangement, the radius of wheel is 25 times more than the radius of an axle. Find the mechanical advantage of the machine.

A

20

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B

25

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C

30

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D

35

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Solution

The correct option is C 25
The mechanical advantage of a wheel and axle $= \frac{R a d i u s o f w h e e l}{R a d i u s o f t h e a x l e}$
Given radius of wheel $=$ 25 $\times$ radius of axle
$M A = \frac{25 \times r a d i u s o f a x l e}{r a d i u s o f a x l e} = 25$

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