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course Phy 201
08/27 05:38 PM
1. Pendulum dataGive your two pendulum counts and lengths. Lengths should be measured with the paper ruler you used in class.
length of first pendulum: 64.5mm one-minute count for first pendulum: 55
length of second pendulum: 32.25mm one-minute count for second pendulum: 74
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2. Number of cycles required for ball to roll down ramp:
first trial (ramp supported on west side of tabletop, wide end of ramp directed to west): 4
second trial (ramp supported on west side of tabletop, wide end of ramp directed to east): 4
third trial (ramp supported on east side of tabletop, wide end of ramp directed to west): 3.5
fourth trial (ramp supported on east side of tabletop, wide end of ramp directed to east): 3.5
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3. The tabletop is almost certainly not level. According you your information, do you think it is tilted toward the east or toward the west?
Toward the west.
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How is your answer related to your data, and with how much certainty do you think your conclusion is supported by your data?
Because the first two trials took longer than the second two trials, the slope must be less steep when the ramp is supported on the west side. If the west side ramp is less steep than the right side ramp, the table overall must be inclined to the west.
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How do you think we could get data to test this question with more certainty?
Measure the tabletop's angle with a level.
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@&
Very good. Thanks.
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