This fraction appears in the potential energy formula for a harmonic oscillator, and it multiplies "a t-squared" in the acceleration term for projectile motion.
For a body undergoing circular motion due to gravity, total energy equals potential energy times this factor. In special relativity, length contraction is proportional "one minus beta-squared" all raised to this power. The reduced mass of a pair of identical bodies equals this number times the mass of one body. For a solid disk in the x-y plane, the moments of inertia about the x and y axes both equal (*) this constant times the moment of inertia about the z axis. This fraction appears in the potential energy formula for a harmonic oscillator, and it multiplies "a t-squared" in the acceleration term for projectile motion. Kinetic energy equals—for 10 points—what fraction, times mass times velocity-squared?
For a body undergoing circular motion due to gravity, total energy equals potential energy times this factor.
one half [or one over two; or 0.5] &lt;AF&gt;