Question: solve Work by a Spring A block with a mass of 7 is attached to a horizontal spring with a spring constant of . The

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Work by a Spring A block with a mass of 7 is attached to a horizontal spring with a spring constant of . The block is pulled a distance away from its equilibrium position and released from rest. A short time later, the block is moving at speed v and is a distance of 7 away from its equilibrium position. Ignore friction. k QUO a | Solution: Work-KE equation with initial velocity of zero (released from rest): W = dmv? im(0) The spring is the only force which does work (no friction). Formula for work done by a spring: = leet Lee? Wepring = zhu; ghar Plugin; = dandxy = #: _i1 2 1 2 Woring = ghd = phe Plug into the work-KE equation: 1 1 2_ 1 Formula 3 points TT. k d u x 1.84keg 18.38 38.2cm | 82.8 em Type your answer... Formula 3 points Pa u 88.2 26.0cm Type your

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