Question

An object is placed at a height of 7m from earth. The mass of that object is 11 kg. Find out the energy of that object take g is 9.8m/s

Answer 1

Explanation:

given,

mass{m}=11kg

height {h}=7m

g=9.8m/s

work =mass×height×g

energy = 11×7×9.8

energy= 754.6joule

Answer 2

Answer:

755 J or 754.6 J

Explanation:

According to the question,

h = height = 7 m

m = mass = 11 kg

g = acceleration due to gravity = 9.8 m/s^2

P.E. = potential energy

And we are asked to find the energy. Here the energy of the body will be potential energy which is stored by it because of its height from the ground.

We know,

• P.E. = mgh

Putting the values we get,

• P.E. = 11*7*9.8
• P.E. = 754.6 J

Thus energy which is potential energy of the body is 755 J (approx).