Question

A bag of wheat weighs 20kg. Calculate the height to which it should be raised so that its potential energy is 1000J.(Take=10m/s^2)​

Answer 1

The height to which it should be raised 5m.

Explanation:

The formula for potential energy depends on the force acting on the two objects.

P.E. = mgh

where m is the mass in kilograms, g is the acceleration due to gravity (9.8 m / s2 at the surface of the earth) and h is the height in meters.

Given,

mass of the stone,m = 20 kg

acceleration due to gravity,g=10m/s^2

potential energy of the bag = 1000 J

height of the stone,h = ?

Soln:

potential energy of the bag= P.E. = mgh = 1000J

20*10*h = 1000

h = 1000/200

h = 5m