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A body weighs 180 N on the surface of earth (Radius=R). How much does the body weigh at a height $\frac{R}{2}$ above the surface of earth?

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Correct option is A

On the surface of earth W=mg=m.GMR2At a height R2 above the surface of earthW1=mg1=mGM(R+R2)2=49GMmR2=4W9⇒W1=49×180 N=80 N

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A body weighs 180 N on the surface of earth (Radius=R). How much does the body weigh at a height R2 above the surface of earth?

Remember concepts with our Masterclasses.

Ready to Test Your Skills?

free study material

A body weighs 180 N on the surface of earth (Radius=R). How much does the body weigh at a height $\frac{R}{2}$ above the surface of earth?