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Hef Hef
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5 years ago
As shown in the figure, a 1.45-kg block is held in place against the spring by a 21-N horizontal external force. The external force is removed, and the block is projected with a velocity as it separates from the spring. The block descends a ramp and has a velocity at the bottom. The track is frictionless between points A and B. The block enters a rough section at B, extending to E. The coefficient of kinetic friction between the block and the rough surface is 0.29. The velocity of the block is at C. The block moves on to D, where it stops. How much work is done by friction between points B and C?


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Textbook 
College Physics: A Strategic Approach

College Physics: A Strategic Approach


Edition: 3rd
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Ajumper1Ajumper1
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