Who is Heavier?

Classical Mechanics Level 2

A Beaker Of Water Is Equilibrium With 300 Grams Of Steel Mass On A Pan Balance. Now suppose that you slowly insert your finger into the water up to the first knuckle, being careful not to touch the beaker. What will happen to the equilibrium condition of the pan balance?

The side with the water will go down. Your Finger Remains Dry. The side with the weights will go down. Neither side will go down, the pan balance will remain in equilibrium.

Aryan Jakhar by Aryan Jakhar , 21, India

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1 solution

Vinayak P
Aug 3, 2014

Newton's third law. By inserting your finger, the water in the beaker exerts a force on your finger. Since that force is an action. there will be a downward reaction which results in an increase in weight.

It also shows that the buoyant force is an action.

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