Question

Potential energy = 588 J
Example 9: An object of mass 12 kg is at a
certain height above the ground. If the potential
energy of the object is 480 J, find the height at
which the object is with respect to the ground
g = 10 m s-2
Solution :
m = 12 kg,
Potential energy (Ep) = 480 J
Potential energy = mgh
480 J = 12 kg x 10 m -2 x h
480 J
h =
= 4 m
-2
120 kg ms
h = 4 m.​

Answer 1

Potential energy = 588 J

Example 9: An object of mass 12 kg is at a

certain height above the ground. If the potential

energy of the object is 480 J, find the height at

which the object is with respect to the ground

g = 10 m s-2

Solution :

m = 12 kg,

Potential energy (Ep) = 480 J

Potential energy = mgh

480 J = 12 kg x 10 m -2 x h

480 J

h =

= 4 m

-2

120 kg ms

h = 4 m.​

Answer 2

Answer:

Height reached by the object is 4 m.

Explanation:

Given,

Mass of object = m =  12 kg

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

Potential Energy of object = 480 J

To find: Height reached by object.

Solution:

Concept: The energy possessed by body by virtue of its position and configuration is known as Potential Energy.

So, Potential Energy = mass*acceleration*height

or, P.E = mgh

here, m = 12 kg , g = 10m/s^2 , P.E = 480 J

Substituting the values,

480 = 12 * 10 * h

or, h= 480 / 120

or, h = 4 m

Therefore, Height reached by the object is 4 m.