Question

When a body moves in an orbit, its total energy is
A. Positive B. Negative C. Zero D. None of them

Answer 1

Answer:

B.Negative

Explanation:

ME= KE+ PE

M.E=1/2mₐvₐ²+(-$\frac{GMbma}{R}$)

M.E=1/2mₐ(GMbr)+(−GMbma/r)

M.E=−GMm/2r<0

Which clearly depicts that When body moves the total energy is Negative

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