An air-track glider attached to a spring oscillates between the 12.0 cm mark and the 54.0 cm mark on the track. the glider completes 13.0 oscillations in 39.0 s .what is the angular frequency of the oscillations?

Atrain departs from its station at a constant acceleration of 5 m/s. what is the speed of the train at the end of 20s?

Use the right-hand rule for magnetic force to determine the charge on the moving particle. this is a charge.

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.