Question
Dane is standing on the moon holding an 8 kilogram brick 2 metres above the ground. How much energy is in the brick's gravitational potential energy store?! (On the moon the gravitational I field strength is 1.6N/kg) . Give your answer to 7 decimal place.
Answer
4
(166 Votes)
Ula
Elite · Tutor for 8 years
Answer
25.6
Explanation
The question asks us to calculate the gravitational potential energy of a brick being held above the surface of the Moon. Gravitational potential energy (PE) can mathematically expressed as follows:
where:-
stands for Potential Energy, which we need to find.-
is the mass of the object, which in the problem is stated as 8 kilograms.-
is the accelerated due to gravity, given for the Moon as 1.6
.-
is the height above the Moon’s surface, which is given as 2 meters in the problem.Substitute the known values into the equation and solve.