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Buoyant Force

A beaker half...

Question

A beaker half-filled with water is put on a platform balance which is then set to zero. A $800 g$ mass is immersed partially in water using a spring balance as shown in the figure. If the spring balance reads $300 g$ , what will be the reading on the platform balance?

A

200 g

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B

300 g

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C

500 g

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D

800 g

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Solution

The correct option is C $500 g$
IT will show the reading of the buoyant force exerted by the liquid on the block.
Actual weight $-$ Appr. weight=B.F
$800 g - 300 g = B . F$
$∴$ reading of weighing machine is $500 g$

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