I. The motion of the tyres of a moving car. II. The motion of a loaded test tube oscillated vertically. III. The beating of the heart. IV. A stone tied to a string and whirled round. V. The motion of the pistons in a gasoline engine. Which of the motions above is simple harmonic?
A. III, IV and V only B. II, III and V only C. II, III and IV only D. I,II and III only
Correct Answer: B
Explanation
Simple harmonic motion is the motion of a body whose acceleration is directed towards a fixed point and is directly proportional to its displacement from point.
