Physics - Gravitation Question with Solution | TestHub

PhysicsGravitationField & ForceEasy2 minPYQ_2020

PhysicsEasysingle choice

An artificial satellite is moving in a circular orbit around the earth, with a speed equal to half the magnitude of escape velocity from the Earth. The height of satellite above the surface of earth is (where $R$ is the radius of the Earth)

Options:

Answer:

Solution:

$\frac{1}{2} \sqrt{\frac{2 G M}{R}} = \sqrt{\frac{G M}{R + h}}$

$\frac{1}{4} \times \frac{2 G M}{R} = \frac{G M}{R + h}$

$2 R = R + h$

$h = R$

Subject:PhysicsTopic:GravitationSubtopic:Field & Force

⏱ 2mℹ️ Source: PYQ_2020

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