"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?"© BrainMass Inc. brainmass.com October 15, 2018, 10:46 am ad1c9bdddf - https://brainmass.com/physics/resistance/cycling-up-hill-how-much-force-must-be-applied-to-maintain-speed-climbing-a-hill-9096
Because along the plane the force which allows the acceleration of the body : mg*sin(Q)
Q == read as ...
With good explanations and formulas, the problem is solved.