Question

Larry's gravitational potential energy is 1870Jas he sits 2.20

m above the ground in a sky diving airplane. What is Larry's
gravitational potential energy when he begins tojump from the
airplane at an altitude of 923m?

Answer 1

Larry's potential energy when he jump from the airplane = 784507.54 J

Step-by-step explanation:

Potential Energy: This is the energy possessed by a person by virtue of it position. The S.I unit of Energy is Joules. Mathematically it is represented as,

Ep = mgh.............. Equation 1

m = Ep/gh ............. Equation 2

Where Ep = potential energy, m = mass of the body, g = acceleration due to gravity, h = height.

constant: g = 9.8 m/s²

When he sits 2.20 m above the ground,

Ep = 1870 J

m = 1870/(2.2×9.8)

m = 86.73 kg.

When he begins to jump from the airplane,

h = 923 m, g = 9.8 m/s² and m = 86.73 kg

Substituting these values into equation 1

Ep = 923×9.8×86.73

Ep = 784507.54 J

Therefore Larry's potential energy when he jump from the airplane = 784507.54 J