Question

The motion of needle of a working sewing machine is an example of periodic motion.

• A. True
• B. False

Answer 1

The correct option is A True

1. The needle of a sewing machine, while moving up and down, repeats its motion after regular intervals, so it possesses periodic motion.
2. Periodic motion is defined as a motion that is repeated at equal intervals of time.
3. Time taken to complete one oscillation by the pendulum is called the time period.
4. $TimePeriod=\frac{Time}{Numberofoscillations}$

Hence, the given statement is true.