Sum
The gravitational potential energy stored in a box of weight 150 kgf is 1.5 x 104 J. Find the height of the box. Take 1 kgf = 10 N.
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Solution
Gravitational potential energy U = mg x h
1.5 × 104 J = (150 kgf) × h
1.5 × 104 J=(150 × IO N) × h
h = `(1.5 ' 10^4)/1500` = `15/10`× `10000/1500`=10 m
Concept: Types of Mechanical Energy: Potential Energy
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