A 050-Kg Ball on the End of a Rope Is Moving

question 8

Multiple Choice

A 0.50-kg ball on the end of a rope is moving in a vertical circle of radius 3.0 m near the surface of the Earth where the acceleration due to gravity, g, is 9.8 m/s2. Point A is at the top of the circle; C is at the bottom. Points B and D are exactly halfway between A and C.
-The ball moves on the circle from A to C under the influence of gravity alone. If the kinetic energy of the ball is 35 J at A, what is its kinetic energy at C?

• A)zero joules
• B)29 J
• C)35 J
• D)44 J
• E)64 J

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