When a stone is immersed in water it displaces water of weight 5 N, calculate the upthrust acting on the stone.

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Solution

Step 1: Given data
Weight of water displaced = $5 N$
Step 2: Finding upthrust acting,
Archimedes Principle - According to Archimedes' Principle, “the upward buoyant force exerted on a body immersed in a fluid is equal to the weight of the fluid the body displaces.”
$B u o y a n t f o r c e (o r u p t h r u s t) e x e r t e d = W e i g h t o f w a t e r d i s p l a c e d b y a f l u i d$
Hence, upthrust acting on the stone is $5 N$ .

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it is easier to lift a heavy stone in water because-

a) stone loses its mass in water

b)stone loses its weight in water

c) stone experience an upthrust equal to the volume of water displaced

d)stone experiences an upthrust equal to the weight of water displaced

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