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Instantaneous Velocity

A solid ball ...

Question

A solid ball of radius $r$ is dropped in viscous liquid. Acceleration $\to a$ of ball after falling a long time is

A

a = \frac{g}{2}

(downward)

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B

a = g

(downward)

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C

a = 0

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D

a = g

(upward)

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Solution

The correct option is C $a = 0$
At terminal speed
$a = 0$

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