Chapter 14, Problem 1CQ

To determine

The three real-world examples of the oscillatory motion.

Answer to Problem 1CQ

The real world example of the oscillatory motion are the motion of a swing, the motion of a pendulum and the AC current waveform.

Explanation of Solution

A motion is said to be oscillatory motion if it repeats itself about a fixed equilibrium position after a particular interval of time. The oscillatory motion is the one that repeats itself in the absence of friction. If the effect of friction is neglected, oscillatory motions can be found at each and every point in the real world.

A motion of a swing about its fixed equilibrium point is considered as the oscillatory motion as the swing continuously retraces its path. The swing goes up to a maximum point and then returns back and reaches a maximum point on the other side of equilibrium position. Therefore, the oscillation of the swing continues about the fixed point.

The motion of a pendulum is also considered as an oscillatory motion. The pendulum moves in the same manner as a swing and retraces its path during its motion. Another example of the oscillatory motion is the AC current. The waveform of the AC current moves in a sinusoidal manner and it covers the same amplitude above and below the equilibrium.

Conclusion:

Thus, the real world example of the oscillatory motion are the motion of a swing, the motion of a pendulum and the AC current waveform.