#$&*

course PHY 201

8/28 2

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: one-minute count for first pendulum: 24cm; 60, 61, 61

length of second pendulum: one-minute count for second pendulum: 13.5cm 80, 78

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):5

second trial (ramp supported on west side of tabletop, wide end of ramp directed to east):5

third trial (ramp supported on east side of tabletop, wide end of ramp directed to west):5

fourth trial (ramp supported on east side of tabletop, wide end of ramp directed to east):4

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?

West

How is your answer related to your data, and with how much certainty do you think your conclusion is supported by your data?

It took less slightly less time to go from the east side to the west side than a previous measurement with the ramp in the same orientation.

Medium certainty.

How do you think we could get data to test this question with more certainty?

By using different positions of each side of the table, slightly different balls, and by measuring ratios between times in each set."