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A string is used to pull a block of mass m vertically up by a distance h at a constant acceleration g/3The work done by the tension in the string is-(1) 2/3mg h(2)-mgh/3(4)4/3mgh(3) mgh |
| Answer» A string is used to pull a block of mass m vertically up by a distance h at a constant acceleration g/3The work done by the tension in the string is-(1) 2/3mg h(2)-mgh/3(4)4/3mgh(3) mgh | |