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A vessel with water is placed on a weigh...

A vessel with water is placed on a weighing pan and reads `600g`. Now a ball of 40g and density `0.80g//c c` is sunk into the water with a pin as shown in fig. keeping it sunk. The weighing pan will show a reading

A

`600g`

B

`550g`

C

`650g`

D

`632g`

Text Solution

Verified by Experts

The correct Answer is:
C
Upthrust on ball = weight of displaced water
`= V sigma g = ((m)/(rho)) sigma g = (40)/(0.8) xx 1xx g = 50g`
As the ball is sunk into the water with a pin by applying downward force equal to upthrust on it. So reading of weighing pan
`=weight of water + downward force against upthrust
=600+50 = 650 gm`.
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