Question

A beaker containing water is balanced on the pan of a common balance. A solid of specific gravity $1$ and mass $5g$ is tied to the arm of the balance and immersed in water contained in the beaker. The scale pan with the beaker -

• A. goes down
• B. goes up
• C. remains unchanged
• D. none of these

Answer 1

Answer: (C)

remains unchanged

Upthrust acts on the arm of balance in upward direction while the reaction of upthrust acts on the base of the pan. Hence, these is no change in position of arm.