Question

A spring balance A reads 2 kg with a block of mass m suspended from it. Another balance Breads 3 kg when a beaker with a liquid is put on its pan. The two balances are now so arranged that the hanging mass m is fully immersed inside the liquid in the beaker as shown in the figure. In this situation.

• A. The balance A will read 2 kg and B will read 5 kg
• B. The balance A will read 2 kg and B will read 3 kg
• C. The balance A will read less than 2 kg and B will read between 3 kg and 5 kg
• D. The balance A will.read less than 2 kg and B will read 3 kg

Answer 1

The correct option is C The balance A will read less than 2 kg and B will read between 3 kg and 5 kg

mass of block = 2 kg

& mass of water = 3 kg

& if it is in the arrangement so A will read less than the mass due to buoyant force hence less than 2 kg & balance B will read somewhere between 3 kg & 5 kg due to block & spring.