Question

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`

Answer 1

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