explain by an example what is meant by potential energy derive the expression of gravitation of potential energy
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potential energy is the energy possesed by virtue of its position relative to others
Jessicasingh:
and grav. p.e.= F=GMm/x square DW=Fdx=GMm/x2 dx. W=integration DW=int. from °° to r GMm int. °° to r x-2 dx.
=GMm[-1/x] from °° to r
= -GMm [1/r -1/°°] = - GMm/r
i.e., U= -GMm/r
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