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`?

`4 N`

`24 N`

`140 N`

`(35)/(4)N`

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