"Not everything that counts
can be counted, and not
everything that can be counted, counts."
- Einstein
I. Uniform Circular Motion
Why can it be said that the earth has a nearly uniform circular motion around the sun?
The earth moves in a plane around the sun. Define the geometric shape called a plane.
The earth and a motorcycle need something
in order to turn. What is that?
Y2K Ducati Women's Motorcycle Team
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"What does this picture tell you about the speed of these motorcyclists?" |
Nina Prinz and Letizia Marchetti - Ducati Women's Motorcycle Racing Team
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"A large centripetal (center directed) force in needed to turn at high speeds." |
St. Mary's H.S. Physics
Skater
Rutgers U.
St. Mary's Physics YouTube Channel
School blocks YouTube? Download file below
VelocityObjectMovingCircle.mp4
In order for an object to move at constant speed in a circle, an outside force must constantly turn the object toward the center of circular path. |
Circular Motion, Car on a Banked Track
by Dr. Michael R. Gallis - mrg3@psu.edu Penn State Schuylkill
Go Nittany Lions!!
Draw the centripetal force,
and tangential velocity
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Draw the centripetal force,
and tangential velocity
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Draw the centripetal force, and tangential velocity
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Where should you release the ball to hit the target? |
| Larger |
B
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At point P, the car hits |
June 2001 Regents
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B, Tangent to |
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