Fig. 14.23 depicts four x-t plots for linear motion of a particle. Which of the plots represent periodic motion? What is the period of motion (in case of periodic motion) ?

Fig. 14.23 depicts four x-t plots for linear motion of a particle. Whi

1.	Fig. 14.23 depicts four x-t plots for linear motion of a particle. Which of the plots represent periodic motion? What is the period of motion (in case of periodic motion) ?
Answer» Solution :(b) and (d) are periodic, each with a PERIOD of 2 s, (a) and (c) are not periodic. [Note in (c), repetition of MERELY ONE position is not ENOUGH for motion to be periodic, the entire motion during one period must be repeated successively].