Question

Verify Archimedes principle of buoyancy with an activity.
For the activity you are provided with a piece of stone, a rubber string and a container filled with water

Answer 1

First tie up the stone with the help of rubber string and then hold it up against a scale fixed on a wall.
Then put a mark on the elongated string when the stone is tied.
Repeat this process again by suspending stone in a beaker which is filled with water.
Now compare the markings
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As the buoyant force is acting on the stone in upward direction, the gravitational pull decreases and then the stretch of rubber is lost

Answer 2

First of all, tie up the stone with the rubber string and hold it against a scale fixed on a wall. Put a mark on the elongated rubber string when stone is tied.Repeat this experiment but this time suspend the stone in a beaker, filled with water. Now, compare the markings. Explanation As the buoyant force is acting on the stone in upward direction, due to this, gravitational pull decreases and in turn, the stretch of the rubber is lost.