A cyclist of mass rides at a steady speed of on a level road
PHYSICS · Multi-part · GCSE · Physics · Energy · Energy
Problem
A cyclist of mass 70kg rides at a steady speed of 8ms−1 on a level road. The total resistive force opposing the motion is 60N.
(i) Calculate the power developed by the cyclist to maintain this speed.
(ii) If the cyclist doubles the speed and the resistive force is directly proportional to the speed, determine the power now required.