1. A 2.0 kg object is attached to a horizontal spring of force constant k = 4.3 kN/m. The spring is stretched 10 cm from equilibrium and released. Discover its total energy.
..... J
------------------------
2. Discover the total energy of a 2.0 kg object oscillating on a horizontal spring with amplitude of 10 cm and a frequency of 2.9 Hz.
..... J
3. Discover the length of a simple pendulum if its frequency for small amplitudes is 1.00 Hz.
........ cm