Question

If potential energy of a body at a height h from the surface of Earth is mgR/2 then height=?
1) h=2R 2) h=R/2. 3) h= R/3 4) h= R
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Answer 1

Answer:

2

Explanation:

PE=mgh

by comparing this with the equation

PE=mgr/2

we get

H=r/2

Answer 2

Answer:

As we know that Potential energy = mgh

Given in question

PE= mgR/2

so height = R/2