A vessel with water is placed on a weighing pan and reads 600 g. Now a ball of 40 g and density 0.80 g/cc is sunk into the water with a pin as shown in fig., ke
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The weighing pan will show a reading of 650 g.
Explanation:
Upthrust on ball = weight of displaced water
= Vσg
= (m/ρ)σg
= 40/0.8 × 1 × g = 50 g
As the ball is sunk into the water with a pin by applying downward force equal to upthrust on it. Therefore, reading of weighing pan
R = weight of water + downward f (D)
R = 600 + 50 = 650 g
The weighing pan will show a reading of 650 g.
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