A 20-Kg Block Sliding on a Rough Horizontal Surface Is Attached

question 65

Multiple Choice

A 2.0-kg block sliding on a rough horizontal surface is attached to one end of a horizontal spring (k = 250 N/m) which has its other end fixed. The block passes through the equilibrium position with a speed of 2.6 m/s and first comes to rest at a displacement of 0.20 m from equilibrium. What is the coefficient of kinetic friction between the block and the horizontal surface?

• A) 0.32
• B) 0.45
• C) 0.58
• D) 0.19
• E) 0.26

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