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Physics - Gravitation Question with Solution | TestHub

PhysicsGravitationMiscellaneousEasy2 minPYQ_2020

PhysicsEasysingle choice

Acceleration due to gravity at earth's surface is $10 {m s}^{- 2}$ . The value of acceleration due to gravity at the surface of a planet of mass $\frac{1}{5}$ th and radius $\frac{1}{2}$ of the earth is -

Options:

Answer:

Solution:

$g_{p} = \frac{G M_{p}}{R_{P}^{2}}$

$M_{p} = m a s s o f p l a n e t$

$R_{p} = r a d i u s o f p l a n e t$

$g_{p} = A c c e l e r a t i o n d u e t o g r a v i t y on planet$

$g_{p} = \frac{G (\frac{M_{e}}{5})}{{(\frac{R_{e}}{2})}^{2}}$

$= G \times \frac{1}{5} \times M_{e} \times \frac{4}{R_{e}^{2}}$

$= \frac{4}{5} g = 8 {m s}^{- 2}$

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:GravitationSubtopic:Miscellaneous

⏱ 2mℹ️ Source: PYQ_2020

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