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The gravitational field in a region is g...

The gravitational field in a region is given by the equation `E=(5i + 12j) N//kg`. If a particle of mass `2kg` is moved from the origin to the point `(12m, 5m)` in this region, the change in the gravitational potential energy is

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`dV=-vec(E) . vec(dr)`
`=-(5i+12j).(12i+5j)=-(60+60)=-120`
Change in gravitational potential energy `dU=mdV =2(-120)=-240 J`
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NARAYNA-GRAVITATION-EXERCISE -IV
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