Properties Of Solids And Liquids Question 223
Question: A ball of radius r and density r falls freely under gravity through a distance h before entering water. Velocity of ball does not change even on entering water. If viscosity of water is h, the value of h is given by
Options:
A)
B)
C)
D)
Show Answer
Answer:
Correct Answer: C
Solution:
Velocity of ball when it strikes the water surface
Terminal velocity of ball inside the water
Equating(i) and (ii) we get
therefore
