Question

An iron ball is weighed in air and then in water by a spring balance :

• A. Its weight in air is more than in water
• B. Its weight in water is more than in air
• C. Its weight is same both in air and water
• D. Its weight is zero in water

Answer 1

The correct option is A Its weight in air is more than in water

IN case of water due to the force of bouyancy , net resultant weight get decreases as bouyant force acts in upward direction ,wheras mg acts in downword direction .hence net weight becomes (mg - bouyant force).

whereas in case of air net resultant weight is mg

hence iron ball would weigh more in air than in water.