SmithLab16

Centripetal Force Lab

__Preliminary Questions__ 1) Since velocity is a vector and because the velocity is constantly changing direction but the speed is the same, that is why circular motion is at a constant speed and it isn't a natural state of motion.

2) The change in motion per unit time is called impulse and Newton's second law adequately expresses its relationship with a net force.

3) The force directed towards the center of circular motion is called accelration.

__Graphs__ __Analysis Questions__ 1) The tension on the string does.

2) The force is pointing towards the center of the circle.

3) It also increases.

4) The centripetal force is expected to be four times greater because velocity is squared.

5) __Application__ 5) Static friction provides the centripetal force needed for a car to go around a circular off-ramp at constant speed.

6) The car will continue in a path tangental to the circle and go off road.

7) Four times as much centripetal force will be required because velocity is squared.