Question

Explain upthrust force and give examples?

Answer 1

Answer:

In simple words it can be defined as:the upward force that a liquid or gas exerts on a body floating/submerged in it. Eg: while swimming we feel that our weight decreases.

Explanation:

while pushing a cork into water, our fingers experience the net upward force. Like liquids, gases also have the property of buoyancy i.e. a body immersed in a gas also experiences an upthrust. For example, a balloon filled with hydrogen rises up because of upthrust.