a) What is the maximum torque exerted by a 60 kg person riding a bike, if the rider puts all
his weight on each pedal when climbing a hill? The pedals rotate in a circle of radius
17 cm.
b) A ball of mass 1.5 kg rolling to the right with a speed of 3.6m/s, collides head-on with
a spring with a spring constant of 2.0Nm^-2.Determine the maximum compression of the
spring and the speed of the ball when the compression of the spring is 0.10 m.
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