Question

the hight of qutab minar is 72m.calculate the potential energy of stone of mass 400g,placed at the top of the minar​

Answer 1

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Answer 2

Given,

The height of Qutub Minar = 72 m

Mass of a stone = 400 g

To find,

The potential energy of the stone placed at the top of the Qutub Minar.

Solution,

We can simply solve this numerical problem by using the following process:

Mathematically,

The potential energy of an object at height "h"

= mass × acceleration due to gravity × height of the object

{Statement-1}

Now, according to the question;

The potential energy of the stone placed at the top of the Qutub Minar

= mass of the stone × acceleration due to gravity × height of Qutub Minar

= (400 g)×(9.8 m/s^2)×(72 m)

= (400/1000 Kg)×(9.8 m/s^2)×(72 m)

{Since 1 g = 1/1000 Kg}

= (0.4 Kg)×(9.8 m/s^2)×(72 m)

= 282.24 Kg.m^2/s^2

= 282.24 J

Hence, the potential energy of the stone placed at the top of the Qutub Minar is equal to 282.24 J.