"Not everything that counts can be counted, and not everything that can be counted, counts."

- Einstein

Y2K Ducati Women's Motorcycle Team

I. Uniform Circular Motion

 "What does this picture tell you about the speed of these motorcyclists?"

Nina Prinz and Letizia Marchetti - Ducati Women's Motorcycle Racing Team

 "A large centripetal (center directed) force in needed to turn at high speeds."

Larger

St. Mary's H.S. Physics

Skater
Rutgers U.

# 13 - Centripetal Force directed to center, velocity is tangent

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

Draw the centripetal force,
and tangential velocity

Draw the centripetal force, and tangential velocity

 Where should you release the ball to hit the target?

| Larger |

B

 At point P, the car hits an area of ice and loses all frictional force on its tires. Which path does the car follow on the ice?

June 2001 Regents

 B, Tangent to the semi-circle

A. Equations & Vectors

1. Centripetal Acceleration (ac) - acceleration toward center of curvature

 a) Equation: ac = V2 r

c) Centripetal Force (Fc) - force directed toward the center of the circle

 ac = V2 r