Question

An object of mass 300 g is hung with string in air. The volume of the object is 30 x 10^-6 m³.

Calculate the tension of the string if the object is fully submerged in a liquid that has a density
of 900 kg m¹.
(4 marks)​

Answer 1

Step-by-step explanation:

Assuming the frictional coefficient uniform everywhere on earth.

torque \tau = R x F; where radial distance and F - frictional force,

since angular momentum of the earth system is conserved as there is no external torque; therefore the torque due to the frictional force of tropical easterlies with earth must equal and opposite in direction due to the torque that of westerlies.

Also since both occupy almost same equal surface area their frictional force must, therefore, be equal in magnitude, So Clearly the strength of easterly must, therefore, be equal to that of westerly by law of conservation of angular momentum in absence of external torque to the system.