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Cycling up hill: How much force must be applied to maintain speed climbing a hill

"If a bicyclist of mass 69.0 (including the bicycle) can coast down a 6.90 degree hill at a steady speed of 5.60 km/hr because of air resistance, how much force must be applied to climb the hill at the same speed?"

Solution Preview

Because along the plane the force which allows the acceleration of the body : mg*sin(Q)
Q == read as ...

Solution Summary

With good explanations and formulas, the problem is solved.