A lead shot of a 1mm diameter falls through a long column of glycerine.The variation of its velocity `v` with distance coverd is represented by,

Options

A.
B.
C.
D.

Answer

A

Explanation

After travelling certain distance ther net force on lead shot is zero. The velocity of falling lead shot goes on increasing due to the effective force acting downward on the ball. The layer of glycerine in contact with lead shot, stage is finally reachedwhenthe opposing viscous force becomes equal to the effective force driving the ball. The net force on the shot is now zero and lead shot attain a constant velocity called the terminal velocity