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A block of mass m = 2 kg is pushed against a spring of spring constant k = 30 N/m until the spring is compressed by x = 0.1 m. The block is released and travels across a rough table with a coefficient of kinetic friction of ?k = 0.05.
(a) What is the maximum speed of the block?
(b) How far does the block travel before stopping?
(c) How much farther or shorter would a 1 kg block travel? Explain.
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The engine weighs 4500 newtons and it is lifted 1.5 meters up by the block and tackle system. The mechanic must apply a force of 225 newtons while pulling a total of 37.5 meters of chain by the block and tackle pulley system. What is the work done..
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