{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Physics II workshop_Part_16

# Physics II workshop_Part_16 - Motion on a Curved Racetrack...

This preview shows pages 1–2. Sign up to view the full content.

34 Motion on a Curved Racetrack Theory : The text proves that the radial (centripetal)acceleration component points to the center of the circle and has a magnitude of a r = v 2 r when an object moves at speed v in a circle of radius r. This is true whether or not the object is changing speed. If the object changes speed it will also have a tangential component of acceleration. Example . You drive a go-cart around a go cart track, consisting of two arcs (radii shown on diagram) connected by two straight segments as shown. Indicate an acceleration of zero by writing a = 0. (a) You drive at a constant 5.0 m/s. What is your acceleration (at points W, X, Y, and Z? Magnitude should be a number. To show direction, draw the acceleration vector (==>) at each point. Be sure that your vectors are to scale relative to each other. (b) Your friend is more adventuresome. She drives the small arc at 5.0 m/s, then accelerates on the lower straight segment from 5 m/s to 15 m/s, which takes 5.0 s, drives the large arc at 15 m/s, and then slows back to 5.0 m/s in 5.0 s on the top straight segment. Find your friend’s acceleration for the

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.

{[ snackBarMessage ]}

### Page1 / 2

Physics II workshop_Part_16 - Motion on a Curved Racetrack...

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

View Full Document
Ask a homework question - tutors are online