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A certain bicycle can go up a gentle inc...

A certain bicycle can go up a gentle incline with constant speed when the frictional force of ground pushing the rear wheel is `F_(2) = 4 N`. With what force `F_(1)` must the chain pull on the sprocket wheel if `R_(1) = 5m` and `R_(2) = 30m`?

A

`4N`

B

`24N`

C

`140N`

D

`35//4N`

Text Solution

Verified by Experts

The correct Answer is:
B
Speed constant so tourque is zero `F_(1)xx5=F_(2)xx30`, with `F_(2)=4N, F_(1)=24N`
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