(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

If a bicyclist of mass 68.0 kg (including the bicycle) can coast down a 6.90 degree hill at a steady speed of 5.80 km/hr because of air resistance, how much force must be applied to climb the hill at the same speed (and the same air resistance)?

2. Relevant equations

The air resistance equations dont seem to apply.

F=MA as always

3. The attempt at a solution

I drew the FBD, tried to sum the forces and got:

The sum of forces in x= mgsino-Fa (force of air resistance)= ma

Sum of forces in y= N-mgcoso=0

Can anyone help me out?

Thanks

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# Homework Help: Force and Air Resistance

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