1500 joules
The formula to determine the potential energy of an object at some height is:
PE = mgh where...
m = mass
g = gravity
h = height
Let:
m = 40 kg
g = 9.81 m/s²
h = 50 m
Then:
PE = 40 kg * 9.81 m/s² * 50 m
= 19620 Joules
Potential energy is weight x height. If you know the mass, the formula is mgh (mass x gravity x height), but in this case, just multiply weight x height. Since you are using consistent SI units, the answer will, of course, be in joules.
1500 joules
The word in your question that I keyed on is "resting". An object at rest has zero kinetic energy. If you meant potential energy, the answer is 1500 joules.
zero
Potential energy = mg * h Given mg = 25 N and h = 3 m So required potential energy = 75 J
A 1-newton book at 4 meters gains approximately 4 joules of potential energy.
1500 joules
The word in your question that I keyed on is "resting". An object at rest has zero kinetic energy. If you meant potential energy, the answer is 1500 joules.
zero
Potential energy = mg * h Given mg = 25 N and h = 3 m So required potential energy = 75 J
A 1-newton book at 4 meters gains approximately 4 joules of potential energy.
Isaac Newton
Force x distance = 100 x 2 = 200 newton-meters = 200 joules.
torque
The mass' approximate potential energy at four meters is 784 joules.
10 newton-meters with respect to the ground
Newton's Gravity is an example of potential energy, E= -mGM/r and Planck's Energy is an example of potential energy E = hf = hc/r.
sir Issac newton