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Centripetal and Centrifugal
Forces
kleins-klasses.wikispaces.com/.../Centripetal+and+Centrifugal+Forces.ppt
CENTRIFUGAL FORCE
centrifugal force is a fictitious force
- it is not an interaction between 2
objects, and therefore not a real
force.
Nothing pulls an object away from
the center of the circle.
Centrifugal Force
What is erroneously attributed to
centrifugal force
is actually the action of the objects
inertia - whatever velocity it has
(speed + direction) it wants to keep.
Centrifugal force
 The red object will make
the turn only if there is
enough friction on it
 otherwise it goes straight
 the apparent outward
force is called the
centrifugal force
 it is NOT A REAL force!
 an object will not move in
a circle until something
makes it!
object on
the dashboard
straight line
object naturally
follows
Centrifugal Force
 Just like we have an
inward seeking force with
circular motion, we can
also have an outward
seeking motion.
 This outward seeking
motion is called
Centrifugal force.
Centrifugal Force
 Centrifugal force can be
seen if we tie a string to a
bucket and fill the bucket
with water.
 The force holding the
water in the bucket and
keeping it from falling out
is Centrifugal Force.
Centrifugal Force
 Centrifugal force is
measured the same way
we measure centripetal
force
 The only difference is the
fact that our direction is
outward and not inward.
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Centrifugal forces

  • 2. CENTRIFUGAL FORCE centrifugal force is a fictitious force - it is not an interaction between 2 objects, and therefore not a real force. Nothing pulls an object away from the center of the circle.
  • 3. Centrifugal Force What is erroneously attributed to centrifugal force is actually the action of the objects inertia - whatever velocity it has (speed + direction) it wants to keep.
  • 4. Centrifugal force The red object will make the turn only if there is enough friction on it otherwise it goes straight the apparent outward force is called the centrifugal force it is NOT A REAL force! an object will not move in a circle until something makes it! object on the dashboard straight line object naturally follows
  • 5. Centrifugal Force Just like we have an inward seeking force with circular motion, we can also have an outward seeking motion. This outward seeking motion is called Centrifugal force.
  • 6. Centrifugal Force Centrifugal force can be seen if we tie a string to a bucket and fill the bucket with water. The force holding the water in the bucket and keeping it from falling out is Centrifugal Force.
  • 7. Centrifugal Force Centrifugal force is measured the same way we measure centripetal force The only difference is the fact that our direction is outward and not inward.