Classical Mechanics
# Circular Motion

$44 \text{ m/s}$ on a circular track takes one lap around the track in $45 \text{ seconds.}$ Determine the approximate magnitude of the acceleration of the car.

A racing car moving at a constant tangential speed ofA $5 \text{ kg}$ rock swings in a vertical circle of radius $2 \text{ m}.$ The speed of the rock as it passes its lowest point is $10 \text{ m/s}.$ What is the tension $T$ acting on the rock as it passes its lowest point?

The gravitational acceleration is $g= 10 \text{ m/s}^2.$