18 - oscillations

Question 1

Define oscillation

Answer 1

a repetitive back and forth or up and down motion

Question 2

Define natural frequency

Answer 2

frequency at which a body vibrates when there is no resistive force acting on it

Question 3

Define sinusoidal

Answer 3

having the form of a sine curve

Question 4

Define period

Answer 4

the time taken to make one complete oscillation

Question 5

Define amplitude

Answer 5

maximum displacement of a particle from its equilibrium position

Question 6

Define Simple harmonic motion (S.H.M.)

Answer 6

a body executes S.H.M if its acceleration is directly proportional to its displacement from its equilibrium position, and in the opposite direction to its displacement

Question 7

Define angular frequency

Answer 7

frequency of a sinusoidal oscillation expressed in radians per second

Question 8

Define damped

Answer 8

oscillation in which resistive forces cause the energy of the system to be transferred to the surroundings as internal energy

Question 9

Define resonance

Answer 9

when the frequency of the driving force is equal to the natural frequency of the oscillating system. the system absorbs the maximum energy from the driver and has maximum amplitude