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A 11.4-kg block rests on a horizontal table and is attached to one end of a...

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Physics

A 11.4-kg block rests on a horizontal table and is attached toone end of a massless, horizontal spring. By pulling horizontallyon the other end of the spring, someone causes the block toaccelerate uniformly and reach a speed of 4.08 m/s in 1.13 s. Inthe process, the spring is stretched by 0.231 m. The block is thenpulled at a constant speed of 4.08 m/s, during which timethe spring is stretched by only 0.0543 m. Find (a)the spring constant of the spring and (b) thecoefficient of kinetic friction between the block and thetable.

Answer & Explanation Solved by verified expert
4.3 Ratings (815 Votes)
a consider the case when the block accelerate m mass of the block 114 kg vi initial speed of block 0 ms vf final speed of block 408 ms t time taken by the block 113 sec acceleration of the    See Answer
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