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A person brings a mass of 1 kg from infinity to a pointA. Initially the mass was at rest but it moves at a speeiof 2 m s as it reaches A. The work done by the personon the mass is -3 J. The potential at A is\vert(a) -3 J kg (b)-2 J kg (c)-5 J kg (d) none of these-1--1 |
| Answer» A person brings a mass of 1 kg from infinity to a pointA. Initially the mass was at rest but it moves at a speeiof 2 m s as it reaches A. The work done by the personon the mass is -3 J. The potential at A is\vert(a) -3 J kg (b)-2 J kg (c)-5 J kg (d) none of these-1--1 | |