Whirl a mass on a string, take a car round a banked bend and swing a bucket in a vertical circle, then cut the string.
You will be able to
- Use ω = 2π / T and v = rω to relate angular velocity, speed and period.
- Calculate centripetal acceleration from a = rω² = v² / r and centripetal force from F = mv² / r.
- Explain the tension at the top and bottom of a vertical circle and determine the minimum speed √(gr) at the top.
