Simple Harmonic motion

Question 1

What are the two conditions of simple harmonic motion?

Answer 1

1. The acceleration is directly proportional to displacement
2. The acceleration is in the opposite direction to the displacement

Question 2

Amplitude of a periodic motion

Answer 2

The magnitude of the maximum displacement of the oscillating particle from the equilibrium position.

Question 3

Angular frequency of a periodic motion

Answer 3

the rate of change of angular displacement with respect to time

Question 4

Damping

Answer 4

oscillations where the amplitude decreases progressively as the system dissipates energy to the surroundings because of friction between the object and its surroundings.

Question 5

Forced vibration

Answer 5

An external force acts on an object, causing it to vibrate other than its own natural frequency.

Question 6

Free vibration

Answer 6

When a system is displaced and allowed to oscillate at its natural frequency, and has no external forces acting on it.

Question 7

Resonance

Answer 7

When the periodic force is in phase with the velocity of the oscillating system resulting in the maximum amplitude. The applied frequency = the natural frequency