Question

The earth's radius is R and acceleration due to gravity is g. If a body of mass m is sent to a height h = R/5 from the Earth's surface, the potential energy increases by_____? ( Please also give full explanation)​

Answer 1

Answer:

potential energy increase by 5times

potential energy =mgh

p= m×9.8×h

and now h=R/5

potential energy= mgh

p= m×9.8×R/5

now,

equate equation 1 and 2

p=m×9.8×h

p=m×9.8×R/5

= h-R/5

5h-R/5

then potential energy increase by 5times