W=1378, X=19, Y=0.019

[a] Use all the following six words in any order, together with other words, to compose a single grammatically correct sentence that makes scientific sense: oscillation, harmonic, displacement, change, restoring, acceleration.

[b] If the pendulum of a large clock has a length of Y meters, what is its period of oscillation? Show the calculations and answer in units of seconds, significant to three digits.

[c] spring with an attached mass of 2.5 kg is stretched Y meters from its equilibrium, which requires a force of X newtons. If it is then released and begins simple harmonic motion, what is its period of oscillation? show the calculations