JAMB Physics 1988 Question 1

Question 1

Simple Harmonic Motion

Which of the following diagrams correctly represents the relationship between the time (T) of swing of a simple pendulum and its length (l)?

Diagram for this question
  1. A.A
  2. B.B
  3. C.C
  4. D.D
Show the answer and explanation

Answer: C (C)

Explanation

T = 2π√(l/g), so T² is proportional to l and the graph of T² against l is a straight line through the origin, as in C.