Rolling: A uniform solid sphere is rolling without slipping along a horizontal surface with a speed of 5.50 m/s when it starts up a ramp that makes an angle of 25.0° with the horizontal. What is the speed of the sphere after it has rolled 3.00 m up the ramp, measured along the surface of the ramp?
A) 4.01 m/s
B) 8.02 m/s
C) 1.91 m/s
D) 2.16 m/s
E) 3.53 m/s

Question

Quizplus · Accepted Answer

The sphere's initial kinetic energy (translational + rotational) is converted into gravitational potential energy as it moves up the ramp. Using energy conservation, the final speed can be calculated.

Rolling: a Uniform Solid Sphere Is Rolling Without Slipping Along