posted by Johnvon on .
Consider a simple pendulum of length 1.1 m with
m = 2.9 kg.
If the amplitude of the oscillation is 0.11 m (as measured along the circular arc along which it moves), what is the total mechanical energy of the oscillator?
When all the mechanical energy is kinetic energy, the energy is
1/2*m*v^2 = 1/2*m*omega^2*r^2
where m is the mass, r is the radius, and omega is the angular velocity; For a pendulum, the angular velocity is given by omega = (g/r)^0.5