Solution to problems – class 9 physics – Set 1 Q 60

Last updated on February 12th, 2022 at 03:24 pm

Problem Statement

60) A metallic sphere of mass 2 kg and volume 2.5 x 10^-4 m³ is completely immersed in water.

Find the buoyant force exerted by water on the sphere.
Density of water = 1000 kg/m³

Solution

Volume of the water displaced = volume of the completely immersed sphere=2.5 x 10^-4 m³


Mass of the displaced water = volume x density = 2.5 x 10^-4 x 1000 kg =0.25 kg

Weight of the displaced water = 0.25 * 9.8 N =2.45 N

The buoyant force is 2.45 N

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Problems Set – grade 9