1. What do you experience? 2. Why stone appears to weigh less when immersed in water?

Question

Take a stone. Hold it and then dip it into water. Now, gradually take it out from water. What do you feel? you will find the weight of the held stone is less until it remains inside water but weight increases as it comes out of water.

By this we know that the an upward force acts on an object when it is inside water. Similarly, your body appears light when you swim in water.

So, we can say that-

An upward force acts on objects submerged in liquid which is known as Buoyant force. This property of liquids  is Buoyancy.

1. What do you experience?

2. Why stone appears to weigh less when immersed in water?

3. What do you call an upward force exerted on any object, when in water?

4. What do you call the buoyant force exerted by the liquid?

Answer 1

1. While holding the stone, still in water, its weight appear to be less.

2. When stone is dipped in water, an upward bounce force is exerted, hence stone appears to weigh less.

3. Buoyant Force.

4. Buoyancy.