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

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"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?"

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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.