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[" 5.A man displaces a block by "5m" on ...

[" 5.A man displaces a block by "5m" on a rough surface "],[(mu=1/2)" by applying a force "50N" acting at "37^(@)" to the "],[" horizontal.The work done by the applied force is "],[[" (1) "200J," (2) "100J],[" (3) "150J," (4) "50J]]

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