Question

Describe an activity to verify the Archimedes' principle.

Answer 1

Archimedes' principle states that the upward buoyant force that is exerted on a body immersed in a fluid, whether fully or partially submerged, is equal to the weight of the fluid that the body displaces and acts in the upward direction at the center of mass of the displaced fluid.


Verification of Archimedes’ principle

Apparatus: Spring balance, measuring cylinder, any irregular small object, thread, water

Procedure

1. Fill the measuring cylinder with water till some level. Note this reading as v1.

ii. ‘Veigh the object in air using a spring balance and note the reading w1.

iii. Immerse the object into the water in the measuring cylinder. Note the weight, w2 from the spring balance and the volume of water, v2 in the cylinder.

According to Archimedes’ principle Weight loss of an object when immersed in water = Weight of the water displaced

w - V x D
w1- w2= (v2-v1)xD

w1-w2 = (v2 - v1) x 1 (Density of water = I g/cm3)

W1- W2 =v2-v 1

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