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Potential Energy of an Object at a Height

A box of mass...

Question

A box of mass 2 kg is lifted diagonally from point A to point B as shown in the given figure. Given that the acceleration due to gravity is 10 $m s^{- 2}$ , Then the gravitational potential energy gained by the box is ___ Joules.

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Solution

Gravitational potential energy = $m g h = 2 \times 10 \times 3 = 60 J o u l e s$

Note: we have to take vertical height for potential energy calculation.

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