I need help calculating the period, expected value, percent, and a...

I need help calculating the period, expected value, percent, and a few other questions from the collected data. Thanks.

Calculate the period for each radius. Record the period values in Table 1.

Use the equation formulated in Pre-Lab Question 2 to calculate the expected (theoretical) value for the period for each radius. Record the expected period values in Table 1.

Table 1: Period During Uniform Circular Motion at Varying Radii
Radius (m)	Time per 15 revolutions (s)	Period (s)	Expected Value	Percent Error (%)
0.25	6.97
0.40	9.10
0.15	3.89

Post-Lab Questions

Use your expression from Pre-Lab question 1 to predict the Expected Values of the period and record in Table 1, then compute the percent errors between the measured and expected values. Do the errors seem to be all random or is a systematic error apparent? Explain your reasoning.

Compare your experimental period values to your expected period values by calculating the percent error for each radius. Explain any differences with an error analysis.

How did changing the radius of rotation affect the period? Does your data seem to support your expression for the period?

Refer to the picture in Figure 3 again (pictured to the right). Before the apparatus begins to spin the wires connecting the swings to the top of the structure will be completely vertical. Once the apparatus begins to spin the swings move outward radially, but also upwards vertically. Hypothesize where the force causing this vertical acceleration comes from.