Define vibration.
(a) What is a vibration (or an oscillation)? Define 'amplitude' of vibration of an object.
(b) What is the frequency of a vibrating body whose time-period is 0.05 second ?
When a body vibrates under a periodic force, the vibrations of the body are :
(a) natural vibrations (b) damped vibrations
(c) forced vibrations (d) resonant vibrations.
Define amplitude, frequency and time period of vibration.