The puck in the figure below has a mass of 0.120 kg. The distance of the puck from the center of rotation is originally 32.0 cm, and the puck is sliding with a speed of 80.0 cm/s. The string is pulled downward 12.5 cm through the hole in the frictionless table. Determine the work done on the puck. (Suggestion: Consider the change of kinetic energy.) J 1x 0 R m

A Ferris wheel is a vertical, circular amusement ride with radius, R = 5 m. Riders sit on seats that swivel to remain horizontal. The Ferris wheel rotates so that riders move at a constant speed, v = 5 m/s. Consider a rider whose mass, m = 70 kg. Assume that the acceleration due to gravity, g = 10 m/s₂. H B * L. How much work does the force exerted by the seat do on the rider as they move from point E to point ? O None of these, because the rider's speed does not change O 3500) O-3501 O-3500

A 4.8 kg body is at rest on a frictionless horizontal air track when a constant horizontal force F acting in the positive direction of an x axis along the track is applied to the body. A stroboscopic graph of the position of the body as it slides to the right is shown in the figure. The force is applied to the body at t = 0, and the graph records the position of the body at 0.50 s intervals. How much work is done on the body by the applied force between t = 0 and t = 1.5 s? = 0 0.5 s -1.0 s 1.5 s 2.0 s 0 0.2 0.4 x (m) 0.6 0.8

S 10. A box of mass 7.60 kg is pulled from rest up a 46.5 m long incline that makes an angle of 22.0° with horizontal. The coefficient of kinetic friction between the box and the incline is 0.200. At the top of the incline, the speed of the box is 4.50 m/s. What is the work done by the pulling force? J E L C 2 R F 5 T G 6 MacBook Air B 00 S Y 7 Submit Assignment H S N J 9 M K MOSISO ge command