Question

The relative velocity between two layers of fluid, separated by 0.1 mm is 2 cm/s. Calculate the velocity gradient.

Answer 1

Gradient in physics means per length...

.'. vel. gradient = 2cm/s / 0.1 mm = 2cm/s / 1 cm = 2 /s

TIPS:

1. Dont forget mm to cm convertion

If any clarification required, please comment below...

                                                                              _koikkara_

Answer 2

Hey dear,

# Velocity gradient-
It's the rate of change of velocity wrt distance from fixed layer.

◆ Answer-
dv/dx = 200 /s

◆ Explaination-
# Given-
∆v = 2 cm/s = 20 mm/s
x = 0.1 mm

# Solution-
Velocity gradient is given by-
dv/dx = ∆v / x
dv/dx = 20 / 0.1
dv/dx = 200 /s

Therefore, velocity gradient is given by 200 /s.

Hope it helps...