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Physics - Gravitation Question with Solution | TestHub

PhysicsGravitationKepler's LawHard2 minPYQ_2011

PhysicsHardsingle choice

A planet moving along an elliptical orbit is closest to the sun at a distance $r_{1}$ and farthest away at a distance of $r_{2}$ . If $y_{1}$ and $v_{2}$ are the linear velocities at these points respectively, then the ratio $\frac{y _{1}}{y _{2}}$ is

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Solution:

From the law of conservation of angular momentum $m r_{1} y_{1} = m r_{2} y_{2} r_{1} y_{1} = r_{2} y_{2} \frac{y _{1}}{y _{2}} = \frac{r _{2}}{r _{1}}$

Stream:NEETSubject:PhysicsTopic:GravitationSubtopic:Kepler's Law

⏱ 2mℹ️ Source: PYQ_2011

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