Physics - Gravitation Question with Solution | TestHub

PhysicsGravitationMiscellaneousEasy2 minPYQ_2020

PhysicsEasysingle choice

The moon's radius is $\frac{1}{4}$ th that of the earth & its mass is $\frac{1}{80}$ times that of earth, if $g$ represents the acceleration due to gravity on the surface of earth, that on the surface of moon is -

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Answer:

Solution:

We know gravitational acceleration

$g = \frac{G M}{R^{2}}$
for moon $R_{m} = \frac{1}{4} R & M_{m} = \frac{M}{80}$
so $g^{'} = \frac{G (\frac{M}{80})}{{(\frac{R}{4})}^{2}} = \frac{G M}{5 R^{2}} = \frac{g}{5}$

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:GravitationSubtopic:Miscellaneous

⏱ 2mℹ️ Source: PYQ_2020

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