Question

E. Differentiate between
1. Periodic and non-periodic motion.
2. Rotational and circular motion.
3. Vibratory and oscillatory motion.​

Answer 1

Answer:

The main difference is that oscillatory motion is always periodic but a periodic motion may or may not be oscillatory. For example, the motion of a pendulum is both oscillatory and periodic but the motion of the wheels of a car is only periodic because the wheels rotate in a circular motion.

iv) Periodic motion : (a) Pendulum of clock, (b) Motion of a swing, heartbeat; (v) Vibrational motion : (a) String of a guitar, (b) Surface of drums; (vi) Circular motion : (a) Rotation of fan, (b) Bicycle wheel; (vii) Random ...

Answer 2

Explanation:

The main difference between these types of motion is that circular motion is a special case of rotational motion, where the distance between the body's centre of mass and the axis of rotation remains fixed. Rotational motion is based around the idea of rotation of a body about its center of mass.