Physics - Gravitation Question with Solution | TestHub

PhysicsGravitationKepler's LawEasy2 minPYQ_2020

PhysicsEasysingle choice

If the distance between the earth and the sun were half of the present distance, then the duration of a year would have been nearly

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Answer:

Solution:

According to the Kepler's law

${(\frac{T_{1}}{T_{2}})}^{2} = {(\frac{r_{1}}{r_{2}})}^{3}$

$∴ \frac{T_{2}}{T_{1}} = {(\frac{r_{2}}{r_{1}})}^{3 / 2}$

$∴ T_{2} = T_{1} {[\frac{r_{2}}{r_{1}}]}^{3 / 2} = 365 {[\frac{1}{2}]}^{3 / 2} = 129 days$

Subject:PhysicsTopic:GravitationSubtopic:Kepler's Law

⏱ 2mℹ️ Source: PYQ_2020

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