Question

What is apparent weight in liquid?

​Explain with example.​

Answer 1

Explanation:

Apparent weight = Weight of body - Upthrust.

Weight of a body is given by = volume×density

Here, V= volume, ρ= density of body and g= acc. due to gravity.

So weight =Vρg

Upthrust on the body is given by = volume×density

Here, V= volume, ρ

L

= density of body and g= acc. due to gravity.

So weight =Vρ

L

g

∴apparent weight=Vρg−Vρ

L

g=V(ρ−ρ

L

)g

example

The apparent weight can also differ from weight when an object is "partially or completely immersed in a fluid", where there is an "upthrust" from the fluid that is working against the force of gravity. Another example is the weight of an object or person riding in an elevator.

ok