## Question

A spherical ball of radius and 10^{4} kg/m^{3} falls freely under gravity through a distance *h* before entering a tank of water. If after entering the water the velocity of the ball does not change, find *h*. The viscosity of water is .

### Solution

20.41 m

After falling a height *h* the velocity of the ball will become . As after entering the water this velocity does not change, this velocity is equal to terminal velocity,

#### SIMILAR QUESTIONS

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