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A cylindrical container of length L is f...

A cylindrical container of length `L` is full to the brim with a liquid which has mass density `rho`.it is placed on a weight -scale, the scale reading is `W`. A light ball of volume `V` and mass `m` which wold float on the liquid, if allowed to do so, is pushed gently downand held beneath the surface of the liquid with a rigid rod of negligible volume as shwon on the left.
What is the reading on the scale?

A

`W-rhoVg`

B

`W`

C

`W+mg-rhoVg`

D

none

Text Solution

Verified by Experts

The correct Answer is:
C
Reading of scale:
`W'=` weight of ball `+` weight of the remaint liquid
`=mg=W-Mg`
`=W+mg-Vrhog`
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