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62. If g is the acceleration due to gravity on the earth's surface, the gain in the potential energy of an object of mass m raised from the surface of the earth to a height equal to the radius R of the earth,is A)1/4mgr B)1/2mgr C)2mgr D)mgr |
| Answer» 62. If g is the acceleration due to gravity on the earth's surface, the gain in the potential energy of an object of mass m raised from the surface of the earth to a height equal to the radius R of the earth,is A)1/4mgr B)1/2mgr C)2mgr D)mgr | |