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Question 26 b...

Question

Question 26 (b)
(b) A ball weighing 4 kg of density $4000 k g m^{- 3}$ is completely immersed in water of density $10^{3} k g m^{- 3}$ Find the force of buoyancy on it. (Given $g = 10 m s^{- 2})$ .

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Solution

Buoyant force = weight of the liquid displaced
= $density of water \times volume of water displaced \times g$
= $10^{3} \times \frac{4}{4000} \times 10$
= 10 N

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