Gravitation - Result Question 56
59. A satellite of mass $m$ is orbiting around the earth in a circular orbit with a velocity $v$. What will be its total energy?
[1991]
(a) $(3 / 4) m v^{2}$
(b) $(1 / 2) m v^{2}$
(c) $m v^{2}$
(d) $-(1 / 2) m v^{2}$
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Answer:
Correct Answer: 59. (d)
Solution:
- (d) Total energy $=-K E=\frac{PE}{2}$
$K . E=\frac{-1}{2} m v^{2}$
