The searchlight on the boat anchored 2000 ft from shore
isturned on the automobile, which is traveling along the
straightroad at a constant speed of 80 ft/s. determine the
angularrate of rotation of the light when the automobile is r =
3000 ftfrom the boat.

Aplate clutch has a single pair of mating friction surfaces 250-mm od by 175-mm id. the mean value of the coefficient of friction is 0.30, and the actuating force is 4 kn. a) find the maximum pressure and the torque capacity using the uniform-wear model. b) find the maximum pressure and the torque capacity using the uniform-pressure model.