Question

A boy weigh 50kg climbs up vertical height of 100 m. Calculate amount of work done by him. How much Potential energy does he get

Answer 1

Potential Energy = mgh

50 x 9.8 x 100 = 49000 joule

Where, m is mass of object
g is acceleration due to gravity
h is hight

Answer 2

Mass of the boy = 50 kg

Acceleration due to gravity,

$g = 9.8m \: per \: s {}^{2}$

Vertical height that the boy climbed up
= 100m

Work done by the boy
=mgh
=50*9.8*100
=49000 J
$= 4.9 \times 10 {}^{4 \: } j$


Gain in Potential Energy
= Work done
$= 4.9 \times 10 {}^{4} j$



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