A body is thrown up with a kinetic energy of 10J. If it attains a maximum height of 5m, find the mass of the body.
Here, kinetic energy of the body, K.E=10 JEk=10J
Height attained by the body, h=5 m
h=5m
When the body attains maximum height, its kinetic energy is converted into potential energy.
P.E=K.E
⟹mgh=10
⟹m=10gh=1010×5=0.2 kg