A front-loading washing machine is mounted on a thick rubber pad that acts like a spring;

A frontloading washing machine is mounted on a thick rubber pad that acts like a spring; the weight W = mg (with g = 9.8 m/sz) of the machine depresses the pad exactly 0.72 cm. When its rotor spins at w radians per second. the rotor exerts a vertical force F 0 cos(a)t) Newtons on the machine. Neglecting friction, determine at what speed (in revolutions per minute) resonance vibrations will occur? resonance occurs at rpms (Round your answer to the nearest revolution per minute)