Question

An object of mass 65kg is raised to a height of 20m calculate
the potential energy posses by the object

Answer 1

Answer:

The potential energy posses by the object is 13000 J

Explanation:

We assume g = 10m/s^2

Height = 20m

Mass = 65 kg

Potential Energy = Mass x Gravity x Height

                            = 65 x 10 x 20 = 13000 J

Answer 2

Answer:

The potential energy possessed by the object is 12740 J.

Explanation:

The potential energy possessed by an object can be calculated as the product of its mass, its height from the ground, and the acceleration due to gravity of the earth.

So, potential energy, P.E = mgh

The mass of the object, m = 65 Kg

Height of the object from the ground, h = 20 m

The acceleration due to gravity of earth, g = 9.8 m/s²

∴ P.E = 65 × 9.8 × 20

  P.E = 12740 J