Lab 9: Centripetal force with a motor
Author: Tian Cih Jiao
Lab Partners: Weisheng Zhang, Kitarou
Purpose of the lab:
The purpose of this lab is to find out the relationship between theta and omega. The experiment setup follows the photo
Theory/Introduction:
get h by the things showed below, when it hit the paper.
cos(θ) = (H-h)/L. then, θ= arccos((H-h)/L).
we will timer 10 rotation for how much time, then ω= 2*PI/(t/10)
Summary of apparatus/experimental procedure:
The following things are what we use in this lab.
Actual apparatus
This is to measure the height, when it hit, it's the height.
Measured data:
H = 1.98 m +/- 0.01m
L = 1.6m +/- 0.01m
h = 0.81m +/- 0.01m
R = 0.8m +/- 0.01m
t1= 28.05s
t2 = 22.98s
t3 = 21.37s
t4 = 17.27s
t5 = 14.73s
t6 = 12.41s
Analysis:
And we use the table following to get more accurate results.
Conclusions:
θ is related to ω, and it increase with it.
and there are some errors in this lab.
and there are some errors in this lab.
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