Which of the following relationship between the acceleration, a and the displacement x of a particle involve simple harmonic motion.
(a) `a=7.0x` (b) `a=-200x^(2)` (c) `a=-10x` (d) `a=100x^(3)`

Explanation

Only (c) i.e., `a =- 10x` represents SHM. This is because acceleration is proportional and opposite to displacement (x).