Microsoft PowerPoint - Knight Ch 8 - Dynamics II motion in a plane notes

# Microsoft PowerPoint - Knight Ch 8 - Dynamics II motion in a plane notes

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
This is the end of the preview. Sign up to access the rest of the 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 ω ω 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 Newton’s 2 nd law to the radial component of circular motion Σ 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

{[ snackBarMessage ]}

### Page1 / 4

Microsoft PowerPoint - Knight Ch 8 - Dynamics II motion in a plane notes

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online