Question

A body of mass 4.0 kg falls from a height of 2.5 m. How much energy does it possess

at any instant? Take g= 10 N kg-1

.



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Answer 1

Explanation:

m=1kg,h=5m,g=10ms

−2

We know that total energy of a body is always constant according to the principle of conservation of energy.

So, energy possessed by the body at any instant = initial potential energy of the body =mgh=1×10×5=50J

Answer 2

Explanation:

m=1kg,h=5m,g=10ms -2

We know that total energy of a body is always constant according to the principle of conservation of energy. So, energy possessed by the body at any instant = initial potential energy of the body =mgh=1×10×5=50J