This preview shows pages 1–9. Sign up to view the full content.
This preview has intentionally blurred sections. Sign up to view the full version.
View Full DocumentThis preview has intentionally blurred sections. Sign up to view the full version.
View Full DocumentThis preview has intentionally blurred sections. Sign up to view the full version.
View Full DocumentThis preview has intentionally blurred sections. Sign up to view the full version.
View Full Document
Unformatted text preview: Chapter 5 Dynamics of Uniform Circular Motion 5.1 Uniform Circular Motion DEFINITION OF UNIFORM CIRCULAR MOTION Uniform circular motion is the motion of an object traveling at a constant speed on a circular path. 5.1 Uniform Circular Motion Let T be the time it takes for the object to travel once around the circle. v r T = 2 r 5.1 Uniform Circular Motion Example 1: A TireBalancing Machine The wheel of a car has a radius of 0.29m and it being rotated at 830 revolutions per minute on a tirebalancing machine. Determine the speed at which the outer edge of the wheel is moving. revolution min 10 2 . 1 min s revolution 830 1 3 = s 072 . min 10 2 . 1 3 = = T ( 29 s m 25 s 072 . m 0.29 2 2 = = = T r v 5.2 Centripetal Acceleration In uniform circular motion, the speed is constant, but the direction of the velocity vector is not constant. 90 = + 90 = + = 5.2 Centripetal Acceleration r t v v v = r v t v 2 = r v a c 2 = 5.2 Centripetal Acceleration The direction of the centripetal acceleration is towards the center of the circle; in the same direction as the change in velocity. r v a c 2 = 5.2 Centripetal Acceleration Conceptual Example 2: Which Way Will the Object Go?...
View
Full
Document
 Summer '09
 Uscinski

Click to edit the document details