This preview shows pages 1–2. Sign up to view the full content.
This preview has intentionally blurred sections. Sign up to view the full version.View Full Document
Unformatted text preview: 1 Dynamics II Motion in a plane Chapter 8 Objects in a circular path undergo centripetal acceleration, a c . () 2 2 2 r r r r v a c = = = r v a c 2 r r = The centripetal acceleration, a c , ___________ points towards the center of the circle in which the object is moving! ____ Uniform Circular Motion Application of Newtons 2 nd law to the radial component of circular motion F c = m a c = m v 2 /r The net force on an object moving in a circle provides the centripetal force this is the force that keeps an object moving in a circle! This is called the centripetal ___________ . The centripetal force is NOT a new concept! Ball on string F c = __________ Car around turn -F c = _______________ Rollercoaster around loop F c = normal force and/or _____________ _______ Ball on a String A ball on a string is maintained in circular motion with constant speed. Lets look at the physics at the top and bottom of the circle. TOP BOTTOM + + a c a c mg mg T T ***Convenient coordinate system is in same direction as ___________...
View Full Document