Question: A cyclist intends to cycle up a 7.8o hill whose vertical height is 150m. Assuming the mass of bicycle plus cyclist is 75kg, (a) Calculate

A cyclist intends to cycle up a 7.8o hill whose vertical height is 150m. Assuming the mass of bicycle plus cyclist is 75kg,
(a) Calculate how much work must be done against gravity.
(b) If each complete revolution of the pedals moves the bike 5.1m along its path, calculate the average force that must be exerted on the pedals moves the bike 5.1m along its path calculate the average force that must be exerted on the pedals tangent to their circular path. Neglect work done by friction and other losses. The pedals turn in a circle of diameter 36 cm.

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