Question

A spherical ball is moving with terminal velocity inside a liquid determine the relationship of rate of heat loss with the radius of ball.

Answer 1

Rate of heat loss `=` power `= F xx v = 6 pi eta r v xx v =6 pi eta r v^(2) = 6 pi eta r [(2)/(9)(gr^(2)(rho_(0) - r_(l)))/(eta)]^(2)`
Rate of heat loss `alphar^(5)`