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[" 3.The work done in slowly pulling up ...

[" 3.The work done in slowly pulling up a block of wood weighing "2kN" for a length of "10m" on a smooth plane "],[" inclined at an angle of "15^(@)" with the horizontal by a force parallel to the incline is "],[[(1)4.36kJ,(2)5.17kJ,(3)8.91kJ,(4)9.82kJ]]

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