Problem 6: A 0.25 kg ball is suspended from a light 1.2 m string as shown. The string makes an angle of 35° with the vertical. Let U = 0 when the ball is at its lowest point (0 = 0). What is the gravitational potential energy, in joules, of the ball before it is released? What will be the speed of the ball, in meters per second, when it reaches the bottom? (from Problem 9) Does replacing the ball by a steel sphere of mass 0.75 kg at the end increase the maximum speed? L

Problem 6: A 0.25 kg ball is suspended from a light 1.2 m string as shown. The string makes an angle of 35° with the vertical. Let U = 0 when the ball is at its lowest point (0 = 0). What is the gravitational potential energy, in joules, of the ball before it is released? What will be the speed of the ball, in meters per second, when it reaches the bottom? (from Problem 9) Does replacing the ball by a steel sphere of mass 0.75 kg at the end increase the maximum speed? L