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Hydraulics - Engineering

Q1:

The terminal velocity (v) of a sphere of radius r and specific weight W, which travels vertically downwards in a liquid of viscosity μ and specific weight W, is

A

B

C

D

ANS:B -

V=g(Ps-Pw) d2/18u.

Where,
Ps-density of solid.
Pw-density of liquid.
u-dynamic viscosity.