Practical part. Take off a physical pendulum from a bracket

1. Take off a physical pendulum from a bracket.
2. By a line to measure general length of b peg.
3. Set a supporting prism 3 in the distance and a = 20 + N of see from his middle and to fix its spirally 4. N is a number of educational brigade.
4. Hang up a physical pendulum.
5. Decline mathematical and physical pendulums on a corner approximately 5^о and to release.
6. By sight to watch after synchronousness of oscillations of both pendulums. In case, if the period of mathematical pendulum more than (less) physical, to decrease (to increase) length of thread of mathematical pendulum.
7. To repeat points 5, 6 to coinciding of periods of oscillations of pendulums, that synchronous oscillation during not less than 20 oscillations.
8. To measure time t of 20 oscillations of pendulums and to find a period .
9. By a line to measure length of mathematical pendulum from the point of hang up to the center of peg. It will be experimental value of the resulted length of physical pendulum of L_exp.
10. Expect the theoretical values of the resulted length after a formula (10.8) and period after a formula (10.10).
11. Compare the experimental and theoretical values of resulted length and to the period, writing down them in a table 10.1.

Table 10.1

12. Expect the error of L_theory.