A puck (mass ) slides on a frictionless table as shown in Figure P9.39. The puck is tied...

A puck (mass ) slides on a frictionless table as shown in Figure P9.39. The puck is tied to a string that runs through a hole in the table and is attached to a mass The mass is initially at height h = 1.5 m above the floor with the puck traveling in a circle of radius r = 0.40 m with a speed of 1.5 m/s. The force of gravity then causes mass to move downward a distance 0.15 m. (a) What is the new speed of the puck? (b) What is the change in the kinetic energy of the puck?