Practical part

1. To drive a hoop to oscillation, declining him on a corner not greater, than 5^о.

2. In moment, when a hoop is in one of extreme positions, to include a stop-watch and measure time of t of twenty (N=20) oscillations.

3. To repeat an experiment in obedience to 1-2 yet 4 times (in all 5). To add results to the table 16.1.

Table 16.1

	, s	,s		D, sm	T, s	T, c

4. Calculate the mean value of time and error of his measuring as direct 5-th multiple measuring.

5. After a formula to find the experimental value of period, and his error.

6. To take off a hoop from a bracket and measure the line of him the middle diameter of D.

7. By formula (16.7) to calculate the theoretical value of period

8. Draw conclusion.