1. The ball which hung the roof is compound pendulum.

2. Based on the principle of compound pendulum, the measurement method and corresponding equipment for the centroidal deviation and the rotary inertia of rocket projectile were described.

3. Varying regularity of libration period on overweighted compound pendulum was obtained by theoretical reasoning?research and analysis.

4. More why is the pace that compound pendulum takes off poverty stridden so greatly?

5. Time dilation effect and the inherent of its mechanisms based on compound pendulum at relativistic motion are studied.

6. A new measuring instrument of rotational inertia has been devised by the fixed - axis rotation principle and parallel axis theorem of compound pendulum.

7. Time dilation effect and the inherent of its mechanisms compound pendulum at relativistic motion are studied.

8. The mixed pendulum is a new one which consists of a simple pendulum and a compound pendulum.

1. The ball which hung the roof is compound pendulum.