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Question: Answered & Verified by Expert
Consider a planet in some solar system that has a mass double the mass of earth and density equal to the average density of the earth. If the weight of an object on earth is W, the weight of the same object on that planet will be:
PhysicsGravitationJEE MainJEE Main 2021 (25 Jul Shift 2)
Options:
  • A 2W
  • B W
  • C 213W
  • D 2 W
Solution:
1791 Upvotes Verified Answer
The correct answer is: 213W

Density is same

M=43πR3ρ, 2m=43πR'3ρ

R'=213R

W=GMmR2

W2=G2MmR'2

W2=213W

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