Question

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

Answer 1

Answer:

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