Post Lab 9

Post Lab 9 - it would not be an accurate approximation 4 T...

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Post Lab 9 1. a) For a pendulum, the velocity is equal to zero at the top of the swing (max angle). b) For a pendulum, the acceleration is equal to zero at the bottom of the swing (zero angle). c) For a spring, the velocity is equal to zero at the bottom of the bounce (lowest point) and the top of the bounce (highest point). d) For a spring, the acceleration is equal to zero at the middle of the bounce. 2. If you did the lab on the moon, the measured T values would increase by a factor of 6. 3. The main approximation that enabled us to get SHM was that the sin of the angle was approximately equal to the angle. This did hold for my experiment, but with a 60º angle,
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Unformatted text preview: it would not be an accurate approximation. 4. T s = 5/9.5 = 0.562 days or 454702.02 seconds. T L = 17.4*2 = 34.8 days or 3006720 seconds. (m/k) s = (45472.02/2π) 2 = 52375569.45 (m/k) L = (3006720/2π) 2 = 2.29 x 10 11 k s = 0.000000191 N/m k L = 4.37 x 10-11 N/m 5. d = mg/k (.05kg)(9.8m/s 2 )/12N/m = 0.0408 m d = (.05 +.075)(9.8)/12 = 0.102 m The larger diameter part of the spring would be easier to twist, and, therefore, have a smaller k-value at the bottom. The spring would be bigger at the top and smaller at the bottom if the spring was upside down....
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This note was uploaded on 11/29/2011 for the course PHY 102M taught by Professor Staff during the Fall '08 term at University of Texas.

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