Q47 of 54 Page 135

An object of mass 6 kg falls from the height of 5 m. Calculate the change in potential energy of the object .

Mass of object (m) = 6Kg


Height (h) = 5m


Change in potential energy is given by,


= mg(h2 – h1)


= 6 × 9.8 × (5-0)


= 6 × 9.8 × 5


= 294 J


(Height of ground level is 0m)


Hence, the change in potential energy is 294 J.


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