Which of the following relationships between the acceleration a and the displacement x of a particle involve simple harmonic motion?

Which of the following relationships between the acceleration a and th

1.	Which of the following relationships between the acceleration a and the displacement x of a particle involve simple harmonic motion?
Answer» `a=0.7x` `a=-200x^(2)` `a=-10x^(2)` `a=100x^(3)` Solution :(C) represents a SIMPLE HARMONIC motion.