Given the task definition and input, reply with output. You are given a passage. You need to construct a question about the information present in the passage. Construct a question in such a way that (i) it is unambiguous, (ii) its answer is the whole paragraph. Avoid creating questions that can be answered correctly without actually understanding the paragraph.

Gravity attracts an object with mass towards the center of the earth.  You must do work, expending your own energy, to overcome gravity and raise a weight.  The weight now has potential energy equal to the weight times the distance raised.  If you raised a 100 Lb weight one foot, you did 100 ft-Lbs of work on the weight and the weight now has 100ft-Lbs of Potential Energy that can be used to do work, such as lift another weight on the other end of a seesaw.  All of the energy discussed derives from the earth's gravitational field which has been converted to mechanical energy.  You could perform the same task on the moon except the amount of work and potential energy would be far less because the moon has less gravity.  Also a pound weight on earth would weigh far less on the moon and scientists would usually use units of mass which is constant on the moon and earth to perform calculations.

how if the gravitational force is occuring due to any energy then it may be converted to some energy ?