There is a bell at the top of a tower that is 40 m high. The bell weighs 20 kg. The bell has energy. Calculate it. Mass (m) -
PE = mxgx h
Gravity (9) =
PE =
Height (h) -

D-no effect on the rate

Okay well gravitational energy is matter forced by gravity making energy though the kinetic energy then the electric energy produces electricity from the kinetic energy and the kinetic energy gets its energy from the gravitational energy. was that the answer you wanted or something else?  

Answerit is not a renewable energy source;