Question

what happens to the potential energy if it is lowered halved to its original height?

Answer 1

otential Energy = P.E = mgh
m = mass 
h = height
g = acceleration due to gravity

P.E = mgh
New potential energy = P.E '
When mass is doubled , 

P.E ' = (2m)gh

P.E ' = 2 × mgh
P.E '  = 2 × P.E

Therefore , 
When mass is doubled ,  Potential energy gets doubled.

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P.E = mgh
New potential energy = P.E '

When mass is halved :

P.E ' = (1/2 m)g h
P.E ' = 1/2 ×mgh
P.E' = 1/2 × P.E

When mass is halved ,  Potential energy decreases by half.

Answer 2

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ⓗⓔⓡⓔ ⓘⓢ ⓨⓞⓤⓡ

ⓐⓝⓢⓦⓔⓡ


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$p.e = mgh$


$<i > height is halved$


result is h/2


$so \: answer \: is \: \frac{mgh}{2}$


Hope it helps you


$<marquee > prabhudutt$