How much work is done when a force of 15.0 newton’s is used to lift a box 3.0 meters into the air?

Which changes of state do the labels represent? a: b: c:

Why are graphs useful when interpreting data

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.