Question

Will a body weigh more in air or in vacuum when weighed with a spring balance?Give a reason for your answer.ICSE Class 9 Physics Chapter Upthrust in Fluids,Archimedes Principle and Floataion

Answer 1

Obviously, body will weigh less in the air as compared to the vacuum.

It is because when body is in the air, the buoyant force exerted on the objects (body) reduces its weight.

On the other hand, when it is weigh in the vacuum there will be slight increase in the body weight.

However, it is negligible.