Circular Motion Lab Procedure 1: Run a string through a small vertical tube and

ID: 1475784 • Letter: C

Question

Circular Motion Lab

Procedure 1:

Run a string through a small vertical tube and tie the upper

end to a small mass

Suspend a small mass to the bottom end of the string

Spin the upper mass in a horizontal circle around your head

Use a stopwatch to time a given number of rotations

Measure the radius of the rotation (pinch string with finger

when finished rotating)

Calculate the velocity of the rotating mass

Calculate FC = mv

Compare to T = m2g

In procedure 1: Hanging more weight at the bottom means that I need to do at least one of the following

MARK ALL THAT APPLY

HINT: T = mstopper v2 / r = mhanging g

Question 3 options:

spin the stopper faster (make v larger)

spin the stopper slower (make v smaller)

spin the stopper in a smaller circle (make r smaller)

spin the stopper in a larger circle (make r larger)

spin the stopper faster (make v larger)

spin the stopper slower (make v smaller)

spin the stopper in a smaller circle (make r smaller)

spin the stopper in a larger circle (make r larger)

T = mstopper v2 / r = mhanging g

so if mhanging is increased ,

T will increase which means either so v will increase or r will decrease

So A and C is correct