Question

Find the GPE of 40,000 kg airplane moving at 80 m/s at 200 meter above the ground.

Answer 1

The airplane gravitational potential energy is 78.4 MJ.

Step-by-step explanation:

Given:

Mass of airplane, m = 40000 kg

Height above ground , h = 200 m

To Find:

Gravitational Potential Energy = ?

Solution:

Gravitational Potential Energy :

Gravitational potential energy is energy an object possesses because of its position in a gravitational field.

Formula is given by

`\textrm{Gravitational Potential Energy}= m* g* h`

Where,

m = mass

g = acceleration due to gravity = 9.8 m/s²

h = height

Substituting the values we get

`\textrm{Gravitational Potential Energy}= 40000* 9.8* 200\\\\\textrm{Gravitational Potential Energy}=78400000=78.4 Mega Joules`

The airplane gravitational potential energy is 78.4 MJ.