A 2.1 kg water balloon is held at a second floor window that is 700.0 cm above the ground. What is the potential energy of the water balloon with respect to the ground?

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When a body with mass m is held at a height h above the ground, it has a gravitational potential energy with respect to the ground equal to PE = m*g*h. If the body is left, it falls towards the ground with the potential energy getting converted to kinetic energy.

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When a body with mass m is held at a height h above the ground, it has a gravitational potential energy with respect to the ground equal to PE = m*g*h. If the body is left, it falls towards the ground with the potential energy getting converted to kinetic energy.

The mass of the water balloon is 2.1 kg and it is held at a window that is 700 cm or 7 m above the ground. Taking the value of acceleration due to gravity g = 9.8 m/s^2, the potential energy of the water balloon with respect to the ground is: 2.1*7*9.8 = 144.06 J

The potential energy of the balloon is 144.06 J

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