Q. 9

# An object of mass 5 kg falls from a height of 5 m above the ground. The loss of potential energy of the mass is :A. 250 JB. 25 JC. 2.5 kJD. 50 J

Given,

Mass = 5kg

Height = 5m

Let g = 10 ms-2

Potential energy stored in a body of mass m and height ‘h’ will be given by

= m × g × h

= 5 kg×10 ms-2×5m

= 250 J

When the mass falls completely, same potential energy is lost = 250 J

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