oscillations

Question 1

period of oscillation

Answer 1

The smallest interval of time after which the to and fro motion is repeated is called its period.

Question 2

periodic motion

Answer 2

Any motion that repeats itself after a definite interval of time is called periodic motion. A body performing periodic motion goes on repeating the same set of movements.

Question 3

frequency

Answer 3

The number of oscillations performed by a particle performing S.H.M per unit time

Question 4

time period

Answer 4

The time taken by the particle performing S.H.M to complete one oscillation is called the period of S.H.M

Question 5

amplitude

Answer 5

The maximum displacement of a particle performing S.H.M from its mean position.

Question 6

Linear S.H.M

Answer 6

It is the linear periodic motion of a body, in which force( or acceleration) is always directed towards the mean position and its magnitude is proportional to the displacement from the mean position.

Question 7

complete oscillation

Answer 7

It is when the object goes from one extreme to other and back to the initial position.

Question 8

harmonic oscillations

Answer 8

It is that oscillation which can be expressed in terms of a single harmonic function such as a x = a sin wt or x = a cos wt

Question 9

non- harmonic oscillations

Answer 9

It is that oscillation which cannot be expressed in terms of a single harmonic function. It maybe represented as such as a x = a sin wt + b cos 2wt

Question 10

ideal simple pendulum

Answer 10

It is a heavy particle suspended by a massless, inextensible, flexible string from a rigid support.

Question 11

second’s pendulum

Answer 11

Its period is two seconds