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A cylinder of mass and radius R rolls without slipping down an incline plane starting from...

A cylinder of mass and radius R rolls without slipping down an incline plane starting from ??rest at a height d above the ground. The plane is angled 30 degrees from the horizontal. Ignoring air resistance, find the speed and the acceleration of the cylinder at the bottom of the plane.

a.Use the methods of conservation of energy to solve this problem.

b. Use the methods of torques to check your answer.

c. Look ? at your answer to this problem and explain the significance of your findings.

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