Oscillations

Question 1

Definition

Natrual frequency

Answer 1

Frequency where body vibrates when there is no resistive force acting on it

Question 2

Definition

Simple harmonic motion

Answer 2

acceleration is directly proportional to its displacement from equlibrium position, and in opposite direction to its displacement

Question 3

Formula

Simple harmonic motion acceleration equals

Answer 3

-(angular frequency)^2 * displacement

Question 4

Formula

Simple harmonic motion

Answer 4

Amplitude * sin(angular frequency * time)

Question 5

Formula

Speed of oscillator equals

Answer 5

angular frequency * sqrt((amplitude)^2 - (displacement)^2)

Question 6

Formula

Period of an oscillator equals

Answer 6

2pi * sqrt(mass / force constant)

Question 7

Formula

Total energy of system under simple harmonic motion

Answer 7

0.5 * Mass * (angular frequency)^2 * (amplitude)^2

Question 8

Definition

Damped oscillation

Answer 8

resistve forces cause the loss in total energy

Question 9

Definition

Resonance

Answer 9

Frequency of driving force equals to natural frequency, increasing amplitude

Question 10

Definition

Critical damping

Answer 10

minimum damping that causes oscillating system to return to its equilibrium in min time without oscillating