energy+conservation+question

# energy+conservation+question - Question A mass m is...

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Δ x 0 x μ k μ k =0 k A mass m is attached to a spring with known spring constant of k, compressed a distance x, and then released as shown in the Fgure. The mass slides over a rough patch with coefFcient of kinetic friction μ k until it passes the equilibrium point of the spring and then slides along a friction-free track up an incline. What was the maximum height the mass traveled up the incline as measured vertically from its starting position in terms of the known variables given above? Question:

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Δ x 0 x μ k μ k =0 k When presented a motion problem you should always ask yourself if it's possible to use conservation of energy before setting it up as a purely Newton's laws problem. Think about the variables given and what you're trying to solve for. In this case we are asked to Fnd a height and are not told anything about accelerations or time. Gravitational potential energy is directly proportional to height so we know it's possible to solve using energy concepts. In this case, we should use conservation of energy to solve the problem, and the
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## This note was uploaded on 11/09/2011 for the course PHYS 1410 taught by Professor Staff during the Fall '08 term at Texas State.

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energy+conservation+question - Question A mass m is...

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