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The earth (mass =6xx10^(4)kg) revolves a...

The earth (mass `=6xx10^(4)kg`) revolves around the sun with an angular velocity of `2xx10^(-2)` rad/s in a circular orbit of radius `1.5xx10^(8)` km. The force excerted by the sun on the earth in newton, is

A

`36xx10^(21)`

B

`27xx10^(39)`

C

zero

D

`18xx10^(25)`

Text Solution

Verified by Experts

The correct Answer is:
A
Mass (m)`=6xx10^(24)`kg,
Angular velocity`(omega)=2xx10^(-7)" rad"//s` and radius(R )`=1.5xx10^(8)" km"=1.5xx10^(11)" m"`.
Force exerted on the earth`=mRomega^(2)`
`=(6xx10^(24))xx(1.5xx10^(11))xx(2xx10^(-7))^(2)=36xx10^(21)N`
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