A cyclist intends to cycle up a `12^(@)` hill 100 m high Assuming the mass of bicycle plus person is 78.0 kg
(a) Calculate how much work must be done against gravity
(b) If each complete revolution of the pedals moves the bike 5.10 m along its path, calculate the average force that must be exerted on the pedals tangent to their circular path. Neglect friction and other losses. THe pedals turn in a circle of diameter 36 cm.

Answer

A, D