Question

Find the potenial energy possessed by a body of mass $4kg$ when it is at height of $10m$ above the ground. (Take $g=10m{s}^{-2}$)

• A. $200J$
• B. $400J$
• C. $600J$
• D. $800J$

Answer 1

The correct option is B $400J$

Given mass, $m=4kg$
Height, $h=10m$
Accelearation due to gravity, $g=10m{s}^{-2}$

As we know,
Potential energy $=mgh$
$=4\times 10\times 10$
$=400J$