Centripetal Force Lab
Objective: a) To
experimentally determine the relationship between
centripetal force and velocity for a
cork moving in a circle.
b) To
determine the approximate velocity that could be
obtained with a centripetal
force of 40 washers.
Centripetal
force apparatus
Page 2
of your lab - Try to come as close as possible to reproducing
this drawing using the drawing tools in your word processor) (Do not use
scanner) INCLUDE ALL LABELS AND THE TITLE ABOVE.
Calculations
Radius = 80 cm = .80 meters
Circumference = 2pr = 2(3.14) x
(.80 m) = ________
Velocity = Circumference/ Time for one revolution
(show one example)
|
Force (Number
of Washers) |
Time
for 10 Revolutions (seconds) |
Time for One Revolution (seconds) |
Velocity
(m/s) |
Velocity 2 (m/s)2 |
|
0 |
0 |
0 |
0 |
0 |
|
5 |
|
|
|
|
|
10 |
|
|
|
|
|
15 |
|
|
|
|
|
20 |
|
|
|
|
Plotting and analyzing the data
Plot Force vs. Velocity then Force vs. Velocity
squared on a second graph
(***** Force
on vertical axis for both plots ******)
ü
Introduction - Briefly define and discuss centripetal force (Fc). Discuss the three factors that determine Fc. (See equation in notes) Then mention
which factor of the three your lab report is looking at.
ü Conclusion – a) Describe the shapes of each plot and identify their mathematical relationships. b) Use the relationships you found to determine the velocity that would be obtained if your apparatus had 40 washers. Explain how you arrived at your answer.