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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

`600 g`

B

`550 g`

C

`650 g`

D

`632 g`

Text Solution

Verified by Experts

The correct Answer is:
C
Upthrust on ball = weight of displaced water
`V sigma g = ((m)/(rho))sigmag= (40)/(0.8)xx1xxg = 50g " Dyne or " 50gm`
As the ball is sunk into the water with a pin by applying downward force eual to upthrust on it.
So reading of weighing pan = weight if water + downward force against upthrust
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