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Rigid Bodies and Newton's Second Law of Motion

The wheel and axle system shown attached in Figure Q2 supports a free hanging mass of 360g. The mass is initially a distance of 2.16m above the floor level when it is released causing the mass to hit the floor 6.2s later. The mass of the wheel and axle system is 40.2kg and its effective radius of gyration is equal to 2.8cm.

(a) Determine the friction torque acting at the bearings of the wheel and axle system.

(b) When the 360g mass hits the floor it is released from the system. Calculate the acceleration of the wheel and axle immediately after the mass has been released.

(c) Calculate how long the system takes to come to rest after the mass has been released.

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