Question

Which of the following is/are the example(s) of rotatory motion?

• A. Water falling down from the tap.
• B. Motion of wheels of an object.
• C. Motion of a clock pendulum.
• D. Motion of a drill bit.

Answer 1

Answer: (B), (D)

The correct options are
B Motion of wheels of an object.
D Motion of a drill bit.

The motion of all particles of a moving body follows a circular path with respect to a fixed center of axis of rotation, is called as rotatory motion.
Wheel and drill bit rotate about its own axis, so they are the examples of rotatory motion. Motion of water falling down from the tap is a translatory motion. Motion of a clock pendulum is an oscillatory motion.