Objective: To investigate how the magnitude of radius (R) affects the time period (T) of an object performing uniform circular motion. Theory: The time (t) required for one complete revolution for an object performing Uniform Circular Motion is called the period (T) 2nR Distance convered T = speed 2nR T= v Thus Period Tis directly proportional to the radius R CAUTION: You will be whirling washer above your head, conduct the experiment in a place with plenty of room away from people and breakable stuff (like windows and computer monitors) Make sure your apparatus is securely built. Make sure that you wear safety goggles. Materials: 1 Aluminum Tube, 1 m. Fishing Line, (5) Metal Washers, Permanent Marker, Scissors Stopwatch, Tape Measure Procedure: 1) Measure out and cut one meter of fishing line

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Objective: To investigate how the magnitude of radius (R) affects the time period (T) of an object
performing uniform circular motion.
Theory: The time (t) required for one complete revolution for an object performing Uniform Circular
Motion is called the period (T)
Distance convered
2tR
T =
speed
2nR
T=
Thus Period T is directly proportional to the radius R
CAUTION: You will be whirling washer above your head, conduct the experiment in a place
with plenty of room away from people and breakable stuff (like windows and computer
monitors) Make sure your apparatus is securely built. Make sure that you wear safety
goggles.
Materials: 1 Aluminum Tube, 1 m. Fishing Line, (5) Metal Washers, Permanent Marker, Scissors
Stopwatch, Tape Measure
Procedure:
1) Measure out and cut one meter of fishing line.
2) Tie a single metal washer around one end, and string the other end through the tube. Tie
four washers at the other end in a group
3) Measure 0.15m from the single washer and use a permanent mark to mark this point on
the line.
4) Hold the tube vertically at arm's length to your side so that the washer near the mark is
hanging from the top.
5) Hold a stopwatch in your other hand or get a willing participant to help you make time
measurements.
6) Begin swinging the tube so that the top washer rotates in a circle. Increasing the speed of
rotation (careful, not too fast!) should change the radius rotation.
7) Vary your speed until the mark you made on the line is at the top of the tube, making the
radius of rotation 0.15 m.
8) At this speed, time (t) how long it takes to make 15 revolutions. Record your values in the
Table 1.
9) Make a new mark at 0.25m and repeat Steps 3 - 8. Record your measurements Table 1.
10) Make a third mark at 0.40m and repeat Steps 3-8 again. Record your measurements Table
on page 2
11) Calculate Period T
12) Compare Radius R and Period T, what does your datat indicate, state your conclusion.
Transcribed Image Text:Objective: To investigate how the magnitude of radius (R) affects the time period (T) of an object performing uniform circular motion. Theory: The time (t) required for one complete revolution for an object performing Uniform Circular Motion is called the period (T) Distance convered 2tR T = speed 2nR T= Thus Period T is directly proportional to the radius R CAUTION: You will be whirling washer above your head, conduct the experiment in a place with plenty of room away from people and breakable stuff (like windows and computer monitors) Make sure your apparatus is securely built. Make sure that you wear safety goggles. Materials: 1 Aluminum Tube, 1 m. Fishing Line, (5) Metal Washers, Permanent Marker, Scissors Stopwatch, Tape Measure Procedure: 1) Measure out and cut one meter of fishing line. 2) Tie a single metal washer around one end, and string the other end through the tube. Tie four washers at the other end in a group 3) Measure 0.15m from the single washer and use a permanent mark to mark this point on the line. 4) Hold the tube vertically at arm's length to your side so that the washer near the mark is hanging from the top. 5) Hold a stopwatch in your other hand or get a willing participant to help you make time measurements. 6) Begin swinging the tube so that the top washer rotates in a circle. Increasing the speed of rotation (careful, not too fast!) should change the radius rotation. 7) Vary your speed until the mark you made on the line is at the top of the tube, making the radius of rotation 0.15 m. 8) At this speed, time (t) how long it takes to make 15 revolutions. Record your values in the Table 1. 9) Make a new mark at 0.25m and repeat Steps 3 - 8. Record your measurements Table 1. 10) Make a third mark at 0.40m and repeat Steps 3-8 again. Record your measurements Table on page 2 11) Calculate Period T 12) Compare Radius R and Period T, what does your datat indicate, state your conclusion.
Observation table
Time per 15
revolutions
Radius
(R)
(meters)
time in seconds for 15 revolution
15
Period (T)
(t)
(seconds)
0.15
0.25
0.40
Transcribed Image Text:Observation table Time per 15 revolutions Radius (R) (meters) time in seconds for 15 revolution 15 Period (T) (t) (seconds) 0.15 0.25 0.40
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