Gravitation Question 7

Question: A body weighs 700 gm wt on the surface of the earth. How much will it weigh on the surface of a planet whose mass is [17] and radius is half that of the earth [CMC Vellore 1984; AFMC 2000]

Options:

A) 200 gm wt

B) 400 gm wt

C) 50 gm wt

D) 300 gm wt

Show Answer

Answer:

Correct Answer: B

Solution:

We know that [g=GMR2]

On the planet [gp=GM/7R2/4=4g7=47g]

Hence weight on the planet [=700×47=400,,gm,wt]



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