Physics 2009 JAMB Past Questions - Question 9: I. The motion of the tyres of a moving car.II. The motion of a loaded test tube oscillating vertically.III. The beating of the heat.IV. A stone tied to a string and whirled round.V. The motion of the pistons in a gasoline engine.which of the motions aboe is simple harmonic?

Correct Answer

B

Explanation

Simple harmonic motion (SHM) is a specific type of periodic motion in which an object oscillates back and forth about an equilibrium position. It is characterized by a linear relationship between the restoring force and the displacement from the equilibrium position. The following motions among the options you provided can be considered simple harmonic:

II. The motion of a loaded test tube oscillating vertically: This is a classic example of simple harmonic motion, as it follows the principles of SHM when a mass is suspended and allowed to oscillate vertically.

IV. A stone tied to a string and whirled round: This motion is also an example of simple harmonic motion. The stone moves in a circular path, and its displacement from the center of the circle follows a sinusoidal pattern, making it a form of SHM.

The other motions (I, III, and V) are not simple harmonic. They may involve periodic motion, but they do not exhibit the characteristics of SHM.