Question

When submerged, a 3N block appears to weigh only 1N. What is the significance of 'missing weight' ?

Answer 1

Thd missing weight is equal to buoyant force of the fluid in which it is immersed.
here the buyant force=2N

Answer 2

Answer:

Objects weigh more in air than in water. When submerged, the 3 N block appears to weigh only 1 N. The missing weight is equal to the weight of the water displaced. The 2 N weight is equal to the buoyant force.

Explanation:

That is, Loss in weight of body = Weight of water (liquid) displaced by the body = Buoyant force or upthrust exerted by water (any liquid) on the body.