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A spherical solid ball of volume  is made of a material of density . [Assume that the liquid applies a viscous force on the ball that is proportional to the square of its speed  The terminal speed of the ball is

a)

b)

c)

d)



Question ID - 57384 | SaraNextGen Top Answer

A spherical solid ball of volume  is made of a material of density . [Assume that the liquid applies a viscous force on the ball that is proportional to the square of its speed  The terminal speed of the ball is

a)

b)

c)

d)

1 Answer
127 votes
Answer Key / Explanation : (a) -

(a)

The force acting on the ball are gravity force, buoyancy force and viscous force. When ball acquires terminal speed, it is in dynamic equilibrium, let terminal speed of ball is

So,    

127 votes


127