A box is 4 m in the air and has 120 J of potential energy. What is the box's mass

Mass of the box is 3.06 kg

Explanation:

Potential energy (that depends on gravity) is the type of energy which is stored that relies on the general position of different parts of a body. It is a property of a framework and not of an individual body or molecule; the framework made out of the Earth and the raised ball.

P. E = m. g. h Equation (1)

as we have to find the mass of the box then the formula for the mass will become

m=P. E/g (h) Equation (2)

as we know

P. E = 120J

h=4m

g=9.8m/s

g is the gravitational acceleration

putting values in the equation (2)

m = 120/9.8 (4)

= 120/39.2

= 3.06 kg

mass of the box is 3.06 kg