Sketch graphs to show how each of the following quantities changes during the course of a single complete oscillation of an undamped pendulum: kinetic energy, potential energy, total energy.

List three examples of situations where resonance is a problem, and three others where resonance is useful. In each case, state what the oscillating system is and what forces it to resonate.

A mass, hung from a spring, oscillates with simple harmonic motion. Which statement is correct?

The bob of a simple pendulum has a mass of $0.40kg$. The pendulum oscillates with a period of $2.0s$ and an amplitude of $0.15m$.At one point in its cycle it has a potential energy of $0.020$ $J$.What is the kinetic energy of the pendulum bob at this point?

State and justify whether the following oscillators show simple harmonic motion. A basketball being bounced repeatedly on the ground.

State and justify whether the following oscillators show simple harmonic motion: A guitar string vibrating

State and justify whether the following oscillators show simple harmonic motion: A conducting sphere vibrating between two parallel, oppositely charged metal plates.

State and justify whether the following oscillators show simple harmonic motion: The pendulum of a grandfather clock