Physics-
General
Easy
Question
A cylindrical container of length L is full to the brim with a liquid which has mass density 
. It is placed on a weight 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 –
g
- w
- w + mg – g
- none of these
g
g
The correct answer is: w + mg – g
Weight mg is entered while weight Vg of liquid is overflowed.
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