A spherical ball is moving with terminal velocity inside a liquid determine the relationship of rate of heat loss with the radius of ball.
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Rate of heat loss`=` power `=F xx v=6pi eta r v xx v =6 pi eta r v^(2)=6p eta r [(2)/(9)(gr^(2)(rho_(0)-rho_(l)))/(eta)]^(2)` Rate of heat loss `alpha r^(5)`
A spherical ball falls through viscous medium with terminal velocity v . If this ball is replaced by another ball of the same mass but half the radius, then the terminal velocity will be (neglect the effect of buoyancy.)
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