Which one of the following bodies is having highest potential energy at a fixed point ? |
|||
(a) |
A body of mass 2 kg is placed at a height of 6 m |
(b) |
A body of mass 3 kg is placed at a height of 5 m |
(c) |
A body of mass 4 kg is placed at a height of 4 m |
(d) |
A body of mass 5 kg is placed at a height of 3 m |
Which one of the following bodies is having highest potential energy at a fixed point ? |
|||
(a) |
A body of mass 2 kg is placed at a height of 6 m |
(b) |
A body of mass 3 kg is placed at a height of 5 m |
(c) |
A body of mass 4 kg is placed at a height of 4 m |
(d) |
A body of mass 5 kg is placed at a height of 3 m |
A particle moves in a straight line with a retardation proportional to its displacement. Its loss in kinetic energy for any displacement x would be proportional to |
|||||||
(a) |
x |
(b) |
x2 |
(c) |
x3 |
(d) |
x4 |
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