Physics - Gravitation Question with Solution | TestHub

PhysicsGravitationSatellite MotionEasy2 minPYQ_2020

PhysicsEasysingle choice

Two identical satellites are moving around the earth in circular orbits at heights $3 R$ and $R$ respectively where $R$ is the radius of the Earth. The ratio of their kinetic energies is

Options:

Answer:

Solution:

The kinetic energy of satellites in a circular orbit is given as

$E_{k} = \frac{G M m}{2 r} \Rightarrow \frac{E_{k_{1}}}{E_{k_{2}}} = \frac{r_{2}}{r_{1}} = \frac{R + R}{R + 3 R} = \frac{2 R}{4 R} = \frac{1}{2}$

Subject:PhysicsTopic:GravitationSubtopic:Satellite Motion

⏱ 2mℹ️ Source: PYQ_2020

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