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23. A block (m = 1.0 kg) is compressed against a spring (k = 800 N/m) a distance of 25 cm on a rough surface with uk = 2 and

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mass of block im = 1.0kg k – 800 NIM Initial compression in the spring - 25cm - 0.25m ur - 0:2 d = 18 distance moved by the bwork done by forces Purperf - change kineda ehersy す Work done by gravity & work done by Spring force & Work done by friction

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