Question

A body of mass 5 kg is raised to a height of 50m. Calculate the potential energy of the body.

Answer 1

Answer:

We know that, potential energy due to gravitation is given by

P.E. = mgh

where, m is the mass,

g is the gravity

h is the height

Given, m = 5 kg, P.E. = 490 joules, g = 9.8 m/s^2

490 = 9.8 x 5 x h

h = 490/(9.8 x 5)

h = 490/49

h = 10 m

Hence, the body should be raised to the height of 10 m

Answer 2

Answer:2500J

the answer is below

Explanation:

solution here

we know

Mass of the body(m)=5 kg

Acceleration due to gravity(g)=10m/s^2

Height(h)=50m

Potential energy(P.E)=?

NOW

P.E=mgh

=5*10*50

=2500J