An eccentric wheel B weighing 150 lb has its mass center G at a distance d = 4 in. from th...

An eccentric wheel B weighing 150 lb has its mass center G at a distance d = 4 in. from the wheel’s center O. The wheel is in the horizontal plane and is spun from rest by applying a constant torque M = 32 ft·lb. Determine the wheel’s radius of gyration kG if it takes 2 s to spin up the wheel to 140 rpm. Neglect all possible sources of friction.

Figure P8.55