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Q2. A 2.5 tonne mass is hauled up a 15^o incline by a cable running parallel to the incline at a constant velocity of 0.3 m/s. The cable passes over a 500 mm diameter winding drum driven by an electric motor with a 25:1 reduction gearing that is 76% efficient. The friction angle between contact surfaces is constant at 13^o.

Calculate EACH of the following:

(a) the torque on the winding drum; (10)

(b) the motor power; (3)

(c) the motor speed in rpm. (3)