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2. (20) k = 500 N/m fo 20 kg The 20 kg block slides on a level, frictionless surface. When the spring is at rest, x=0. a. (10
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028 Block mass, ma 20kg string stuftness, ka 900 Nlm. K= Soonlm W pokg. H - Friction des Surface . .. - (as Fro, Belock Veloc

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