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Suppose a 4000 kg elephant is hoisted 20m above Earth's surface. What will be the elephant's gravitational potential energy?

Respuesta :

We know, U = m * g * h
U = 4000 * 9.8 * 20
U = 784000 J

In short, Your Answer would be: 784000 J or 784 KJ

Hope this helps!
Lanuel

The elephant's gravitational potential energy (GPE) is 784,000 Joules.

Given the following data:

  • Mass of elephant = 4000 kg
  • Height = 20 meters

We know that acceleration due to gravity (g) is equal to 9.8 [tex]m/s^2[/tex]

To find the elephant's gravitational potential energy (GPE);

Mathematically, gravitational  potential energy (GPE) is calculated by using the formula;

[tex]GPE = mgh[/tex]

  • m is the mass.
  • g is the acceleration due to gravity.
  • h is the height.
  • GPE is the gravitational potential energy.

Substituting the values into the formula, we have;

[tex]GPE = 4000[/tex] × [tex]9.8[/tex] × [tex]20[/tex]

Gravitational potential energy (GPE) = 784,000 Joules.

Therefore, the elephant's gravitational potential energy (GPE) is 784,000 Joules.

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