Question

Select the odd one :

Bouncing ball, spinning top, oscillating pendulum, study table
A. Study table
B. Bouncing ball
C. Spinning top
D. Oscillating pendulum

Answer 1

A motion repeating itself is mentioned as periodic or oscillatory motion. An object in such motion oscillates about an equilibrium position thanks to a restoring force or torque. Such force or torque tends to revive (return) the system toward its equilibrium position regardless of during which direction the system is displaced.

Complete step by step answer:
A motion repeating itself is mentioned as periodic or oscillatory motion. An object in such motion oscillates about an equilibrium position thanks to a restoring force or torque. Such force or torque tends to revive (return) the system toward its equilibrium position regardless of during which direction the system is displaced.
Motion to occur, two quantities are necessary to be present—stiffness and inertia.
All oscillatory motions are periodic because each oscillation gets completed during a definite interval of your time.
Here, all the three objects bouncing table, spinning top and oscillating pendulum are in any oscillatory motion with respect to earth as frame of reference. But the study table is at rest.
So the study table is odd one out of the four objects.
Hence option( A) study table is the correct answer.

Note: All oscillatory motions are periodic because each oscillation gets completed during a definite interval of your time. Eg: On being pulled then released, a load attached to a spring executes oscillatory motion. On the opposite hand, all periodic motions might not be oscillatory. Oscillatory motion is vital to review many phenomena including electromagnetic waves, AC circuits, and molecules.