This preview shows pages 1–5. 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 Document
Unformatted text preview: Kinematics in 2D (II) Kinematics in 2D (II) Uniform circular motion Tangential and radial components of Relative velocity and acceleration Serway and Jweett : 4.4 to 4.6 a Uniform Circular Motion uniform means constant speed velocity changes (direction changes) acceleration : find by subtracting vectors, then v v v t = v a center 1 v 2 v 1 r 2 r What is the value of v/ t, as t 0 ? Subtract velocities: 1 v 2 v v Compare with displacements: 1 v 2 v 1 r 2 r 1 r 2 r r r r v v = Similar triangles, Note is perpendicular to v r From previous slide: r v r v = t t , v r v a as t 0, 2 r v a c = and so Direction: Since v i s perpendicular to r , a is perpendicular to v So, a is towards the centre of the circle (centripetal)....
View
Full
Document
This note was uploaded on 10/16/2011 for the course ASSADD DWED taught by Professor Wede during the Spring '10 term at Adventista de las Antillas.
 Spring '10
 WEDE

Click to edit the document details