Question

Figure 14.27 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)?

(a)



(b)



(c)



(d)

Answer 1

(a) it is an unidirectional . so, No repetation of motion .

(b) motion repeats every 2s . hence it means it is a periodic motion .

(c) Periodic motion is the motion when particle repeated a definite distance in regular time of interval .here you are seeing particle repeated the motion but motion is irregular . so, it's not periodic motion.

(d) the motion repeats itself every 2s
Hence, it is periodic motion of period 2s