Question

PLEASE ANSWER FIRST AND BEST ANSWER WOULD BE MARKED AS BRAINLIEST
DERIVATION OF U=mgh
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Answer 1

We know that ,

Work done = force × displacement

W = F × s

But, force = mass × acceleration

F = m × a

F = ma

acceleration = acceleration due to gravity

a = g

F = mg

also, displacement = height attained

s = h

Therefore we get ,

W = mg × h

W = mgh

Since work done is equal to energy consumed

Therefore,

P.E = mgh

or

U = mgh

Answer 2

check the attachment

hope it helps