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General
Easy
Question
A cylindrical container of length L is full to the brim with a liquid which has mass density r. It is placed on a weigh-scale; the scale reading is W. A light ball which would float on the liquid if allowed to do so, of volume V and mass m is pushed gently down and held beneath the surface of the liquid with a rigid rod of negligible volume as shown on the left.
What is the reading of the scale when the ball is fully immersed?
- W–
Vg
- W
- W + mg – Vg
- None
Vg
Vg
The correct answer is: None
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