quiz5sol - October 10, 2007 PHY2053 Quiz 5 (5.4-5.7, 8.3)...

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Unformatted text preview: October 10, 2007 PHY2053 Quiz 5 (5.4-5.7, 8.3) Name: UFID: 1. (5 pts) A 2.00 kg block is shot in the uphill direction from a light spring placed along a frictionless incline of 45. The spring has a spring constant of 350 N/m. The lower end of the spring is fixed and the block is pressed against the upper end compressing the spring by 8.00 cm from the equilibrium position. What is the speed the block when it leaves the spring? At the equilibrium position, the net force on the block is zero. Thus, the compression of the spring at the equilibrium position (d) is given by kd-mgsin = 0, d = mgsin /k = 2 9.8sin45/350 = 0.0396 m We compress the spring further by D = 0.08m and release. The block leaves the spring when the spring comes back to its natural length. Since the work done by the spring and when the spring comes back to its natural length....
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quiz5sol - October 10, 2007 PHY2053 Quiz 5 (5.4-5.7, 8.3)...

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