Solve Prob. 17.9, assuming that the 10-N . m couple is applied to gear B.
Prob. 17.9 Each of the gears A and B has a mass of 2.4 kg and a radius of gyration of 60 mm, while gear C has a mass of 12 kg and a radius of gyration of 150 mm. A couple M of constant magnitude 10 N . m is applied to gear C. Determine
(a) the number of revolutions of gear C required for its angular velocity to increase from 100 to 450 rpm,
(b) the corresponding tangential force acting on gear A.