Question

9. A body of mass 70 kg, when completely immersed in
water, displaces 20,000 cm? of water. Find : (1) the
weight of body in water. ​

Answer 1

Explanation:

volume of water displaced is 20000 cm^3

therefore buoyant force = V ro g = 20000 × 1 × 10 dyne = 2 × 10^5 dyne = 2 N

now weight of body in water = 70 g - 2 N = (700 - 2)N = 698 N