422 Water See-Saw

So a bob is dipped into the water.

Should that side be heavier because of the bob’s “downthrust” (the downward action-reaction buddy of the upthrust force that the water exerts on the bob)?

Or should that side be lighter because of the missing (displaced) water’s weight?

Guess that, the “downthrust” is equal in magnitude to the missing (displaced) water’s weight!

Water has this amazing ability to spread the weight uniformly!

The balance is broken when the bob touches the bottom of the container. The additional downward normal contact force tips the balance.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s