A Solid Spherical Ball of Mass M and Radius R

question 34

Multiple Choice

A solid spherical ball of mass M and radius R rolls without slipping down an inclined plane from a height h.Compare the center of mass speed of the ball at the bottom of the plane with the speed obtained if the ball were simply dropped from a height h.

• A)rolling ball is (5/7)^1/2 times slower
• B)rolling ball is 7/5 times faster
• C)rolling ball is (2/3)^1/2 times slower
• D)rolling ball is 2/3 times faster
• E)rolling ball and dropped ball have the same speeds

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