The crate, which sets on a 10 degree incline, has a weight of 3433.5 n and is subjected to a towing force p acting at a 20 degree angle with the horizontal. if the coefficient of static friction is µs = 0.5, determine the force p needed to just start the crate moving down the plane.

Two steel balls, each of mass m, are welded to a light rod of length l and negligible mass and are initially at rest on a smooth horizontal surface. a horizontal force of magnitude f is suddenly applied to the rod as shown. determine (a) the instantaneous acceleration a of the mass center g and (b) the corresponding rate at which the angular velocity of the assembly about g is changing with time.