Question

A bag of wheat weight 200kg to what hight should it be raised so that potential energy may be 9000joule and accelaration due to gravity 9.8





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Answer 1

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$.$

$\star$ 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.

Answer 2

Answer:

Hii

Explanation:

Your answer is 4.6

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