Question

A man of mass $50kg$ climbs up a ladder of height $10m$. Calculate the increase in his potential energy. $(g=9.8m{s}^{-2})$

• A. $490J$
• B. $2450J$
• C. $4900J$
• D. $0J$

Answer 1

The correct option is C $4900J$

$P.E=m\times g\times h$
Given m = 50 Kg , h = 10 m.
$P.E=50\times 10\times 9.8$
$P.E=50\times 98=4900J$
Hence increase in potential energy is $4900J$.