- A. General Materials & Mathematics
- B. Statics
- C. Kinematics & Dynamics
- D. Rotational Mechanics
- E. Gravitation & Astronomy
- F. Fluid Mechanics
- G. Vibrations & Mechanical Waves
- H. Sound
- I. Thermodynamics
- J. Electrostatics & Magnetostatics
- K. Electromagnetic Principles
- L. Geometrical Optics
- M. Wave Optics
- N. Spectra & Color
- O. Vision
- P. Modern Physics
To illustrate how the center of mass position affects the stability of an arch.
Eighteen marked 2"x4" wooden blocks with wooden box bases, as photographed.
Identical blocks are piled up with successively greater fractions of their lengths
(1/16, 1/14, 1/12, 1/10, 1/8, 1/6, 1/4, and 1/2) extending over the edge of the preceding
block, as shown in the photograph. Even though the top block is entirely over the
edge of the base, the center of mass of the system remains above the base, so the
configuration is stable.