Verified answer

Answer :

Mass of wheat bag = 200kg

Potential energy gained = 9000J

Acceleration due to gravity = 9.8m/s²

We have to find height of bad from the ground

Potential energy is the energy which is possessed by a body by virtue of its position.

It is a scalar quantity having only magnitude.

SI unit : J

Potential energy of body of mass m at a height of H from ground is given by

• U = m g H

By substituting the values, we get

⭆ U = m g H

⭆ 9000 = 200 × 9.8 × H

⭆ H = 90/2(9.8)

⭆ H = 4.6 m

∴ Bag of wheat should be raised by 4.6 m in order to gain potential energy of 9000J.