Question

Define free forced and resonant vibration

Answer 1

Free vibrations are oscillations where the total energy stays the same over time. This means that the amplitude of the vibration stays the same. ... Forced vibrations occur when the object is forced to vibrate at a particular frequency by a periodic input of force.

Answer 2

Answer:

2) Forced vibrations : The vibrations of a body in

response to an external periodic force are called

forced vibrations.

The external force supplies the necessary energY

to make up for the dissipative losses. The frequeney

of the forced vibrations is equal to the frequency of

the external penodic torce.

The amplitude of the forced vibrations depends

upon the mass of the vibrating body, the amplitude

of the external force, the difference between the

natural frequency and the frequency of the periodic

force, and the extent of damping.