Question

The gravitational field of planet Mars is given by G = 3.9 N/Kg. You are lifting an object of mass 41 Kg from the ground to above your head to a height of 2.2 meters . What is the potential energy of the object in Joules at this height?

Answer 1

351.78 J

Step-by-step explanation:

Given:

m = 41 kg

g = 3.9 N/kg or 3.9 m/s²

h = 2.2 m

Unknown:

PEg or gravitational potential energy

Formula and solution:

PEg = mgh

PEg = (41kg)(3.9m/s²)(2.2m)

Final Answer:

PEg = 351.78 kg m²/s² or 351.78 J