A body of weight 20 N floats half submerged in a liquid. What is the buoyant force on the body?

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Solution

Step 1: Given data and assumption
weight of the body, $w = 20 N$
buoyant force, $f$
Step 2: Relation between the weight of the body and the buoyant force
Since body is floating,
$w = f$
Step 3: Finding the value of the buoyant force
$f = w = 20 N$
Hence, the buoyant force is equal to $20 N$

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