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Sahay Sir > Question Answers > Cengage NEET by C.P Singh > Part 1 > Chapter 14 - Fluid Mechanics > A small sphere of mass m is dropped from a great height. After it has fallen 100 m it has attained its terminal velocity and continues to fall at that speed. The work done by air friction against the sphere during the first 100 m of fall is-

A small sphere of mass m is dropped from a great height. After it has fallen 100 m it has attained its terminal velocity and continues to fall at that speed. The work done by air friction against the sphere during the first 100 m of fall is-

A square plate of 0.1 m side moves parallel to a second plate with a velocity of `0.1 m/s` both plates being immersed in water. If the viscous force is 0.002 N and the coefficient of viscosity is 0.01 poise distance between the plates in m is