Awinery has a vat with two pipes leading to it. the inlet pipe can fill the vat in 66 ? hours, while the outlet pipe can empty it in 1010 hours. how long will it take to fill the vat if both pipes are left? open?

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.