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A body weighs 700gm wt on the surface of...

A body weighs `700gm` wt on the surface of the earth. How much will it weigh on the surface of a planet whose mass is `1/7` and radius is half that of the earth

A

200 g wt

B

400 g wt

C

50 g wt

D

300 g wt

Text Solution

Verified by Experts

The correct Answer is:
B
`W_E=0.7xx9,8N=700` gwt
`g.=(GM.)/(R.^2)=(GxxM/7)/((R//2)^2)=4/7g=4/7xx9.8`
`W_P=400gwt`
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