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Q. A solid cylinder of mass 3.0 kg and radius 0.20 m starts from rest at the top of a ramp, inclined 15°, and rolls to the bottom without slipping. (For a cylinder I = 0.5MR2) The upper end of the ramp is 1.2 m higher than the lower end. Find the linear speed of the cylinder when it reaches the bottom of the ramp?

The correct answer is 4.0 m/s but I need to know step by step how to get there.

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