A cyclist of total mass 85 kg maintains a constant speed up an inclined plane. the plane is inclined at 20 degrees to the horizontal. with frictional force of 120 N. the cyclist covers a distance of 50 m along the inclined plane in 20 s.
1. Calculate the work done by the cyclist's applied force
2. Calculate the average power output of the cyclist.
1. Fx = Fg sin 20
85 x 9.8 x sin 20
284.9
284.9 + 120 = 404. 9 (not in direction of the force)
404.9 x 50 = 20245 but answer behind book [without calculations] is 20145 please help
1 answer