Q.
Figure shows a planet in an elliptical orbit around the Sun S. Where is the kinetic energy of the planet maximum?
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a
b
c
d
answer is D.
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Detailed Solution
Here, angular momentum is conserved. According to it,
,
At point , the value of R is minimum and hence the velocity is maximum or KE is maximum
In an elliptical orbit, the principle of conservation of angular momentum plays a crucial role in determining the speed and kinetic energy of a planet. According to this principle, the angular momentum of a planet remains constant throughout its motion around the Sun.
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