InterviewSolution
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InterviewSolution
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Expression for potential energy |
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Answer» If we raise a body of mass"m"to a height "h" and during this a force of acceleration due to gravity is acting in opposite direction of the motion of the body..Now we know that work done=force*distance........(1)And we also know that face=Mass*acceleration =m*g...........(2)And here perpendicular distance=h..........…..............,....(3)From (1) ,(2) and (3):Work done=force*distance =m*g*hAnd we also know that work done=energy consumed or energy used up.And we also know that energy consumed by a body=energy gained by another body. ,(if work is done by first body on another second body)Therefore, energy=m*g*h..Here the body is raised therefore here energy will be gravitational potential energy...So. Potential energy=m*g*hNote: g=acceleration due to gravity . While G=gravitational constant M×G×HWhere M=massG=gravitation forceH=height |
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