A disk of mass m = 0.140 kg is attached to a lightweight, taut string which keeps it in circular motion, as shown in the figure below. The disk slides on a horizontal table with negligible friction at speed v = 80.0 cm/s, and the radius of its circular path is r,= 36.0 cm. The string passes a small hole in the table and is initially held in place. The string is then slowly pulled downward a distance of 12.0 cm. How much work (in J) is done on the disk? O Need Help? L Read

A disk of mass m = 0.140 kg is attached to a lightweight, taut string which keeps it in circular motion, as shown in the figure below. The disk slides on a horizontal table with negligible friction at speed v = 80.0 cm/s, and the radius of its circular path is r,= 36.0 cm. The string passes a small hole in the table and is initially held in place. The string is then slowly pulled downward a distance of 12.0 cm. How much work (in J) is done on the disk? O Need Help? L Read