Question

A plane that is 2000m in the air of the potential energy of the plane is 86000 J what is the mass of the plane

Answer 1

Hi there!

Recall the equation for gravitational potential energy:
$GPE = U = mgh$

m = mass (kg)
g = acceleration due to gravity (9.8 m/s²)

h = height (m)

We are given the GPE, so we can solve for mass:
$86000 = m * 2000 * 9.8$

Solve for m:
$m = \frac{86000}{2000(9.8)} = \boxed{4.39 kg}$