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A body weight 20 N in water and its rela...

A body weight 20 N in water and its relative density is 3. Find the weight of the body in air.

Text Solution

Verified by Experts

Let `W_(1)` be the weight of the body in air, and `W_(2)` be its weight in water,
`therefore W_(2)=20 N`
R.D. of the body=3
`therefore(W_(1))/(W_(1)-W_(2))=3`
`(W_(1))/(W_(1)-20)=3 implies W_(1)=30 N`
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