Question

The graphs in figure show that a quantity y varies with displacement d in a system undergoing simple harmonic motion. The unbalanced force acting on the system.

• A. I
• B. II
• C. III
• D. IV

Answer 1

The correct option is D IV

In the graphs I, II and III the quantity $y$ is single valued that means a linear force is acting. While in graph IV $y$ has multiple values for specific $d$ that means unbalanced force.