Lecture9

# Lecture9 - Centripetal force Radial or Centripetal...

This preview shows pages 1–4. Sign up to view the full content.

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document

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: Centripetal force Radial or Centripetal acceleration ω = d θ d t a R = v 2 r = - ω 2 r where |v| = cost This is because v change direction. but |a| = 0 F centripetal = m a centripetal • Since a = 0 there must be a (total) force acting on the object that makes it go around •This force always point to the center of the circle (F//a) Ball moving in a circular path on an horizontal plane . If we neglect air resistance, what are the forces act on the ball? Horizontal plane .- Tension- Centripetal force IMPORTANT : Centripetal force is NOT a separate force, it can be any of the forces we know (friction, tension, gravity, normal force, etc…) acting in the role of a force that cause a circular motion. Tension is what causes the centripetal acceleration and makes the ball go around. F R N- Normal W- Weight perpendicular to the plane x Force diagram: Radial reference frame T N W y T = mv 2 / R N-W =0 x: y: (radial component) (perpendicular plane) F net = F centripetal Centrifugal force Is this all? Is this all?...
View Full Document

{[ snackBarMessage ]}

### Page1 / 14

Lecture9 - Centripetal force Radial or Centripetal...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online