Post on 01-Feb-2016
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CORIOLIS EFFECT
What is Coriolis Effect?
The Coriolis effect is the apparent deflection of moving objects when the motion is described relative to a rotating reference frame.
Let us consider two kids playing a ball game on a merry-go-round
Case 1 –When the merry-go-round is stationery
Case 2- When Merry-go-round is is rotating, say CCW.
We could observe that the ball took a curve path andgot deflected away to the right.
w.r.t Inertial frame
w.r.t rotating frame
Coriolis Force is a pseudo/fictious force that acts on a body in motion w.r.t a rotating frame of reference.
The direction of coriolis force is always perpendicular to the rotation axis and to the vel. of body in the rotating frame.
Fcor = 2mVxω
.
V
ω
Fc
V
V
V
ω
ω ωFc
FcFc
The coriolis effect –Causes a deflection in the global wind
PatternsIt affects any object (air parcel, missile
train) moving over a appreciable dist on earth.
MAGNUS EFFECT
The Magnus effect is the commonly
observed effect in which a spinning ball
(or cylinder) curves away from its principal
flight path.
The Magnus effect is a particular manifestation of Bernoulli’s theorem: fluid pressure decreases at points where the speed of the fluid increases.
Magnus effect can be seen in •In sport- Football, Tennis, Volley ball.•In External ballistics.
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