Two hail stones iron the form of a sphere with radii in the ratio | Filo
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Class 11

Physics

Mechanics

Mechanical Properties of Fluids

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Two hail stones iron the form of a sphere with radii in the ratio 1:2, fall from a great height through the atmosphere. What will be the ratio of their momenta when they attain their respective terminal velocities?

  1. 1:16
  2. 1;32
  3. 1:1
  4. 1;4
Correct Answer: Option(b)
Solution: The terminal velocity is attained when gravitational force is equal and opposite is given by
. . . . . . . (1)
.

Mass, . . . . . .(2)



ratio of momentum,




The correct option is B.

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