Question

Figure below 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 1

(i) The Fig. (a) does not represent periodic motion, as the motion neither repeats nor comes to mean position.

(ii) The Fig. (b) represents the periodic motion, with period equal to 2s.

(iii) The Fig. (c) does not represent periodic motion, because it is not identically repeated.

(iv) The Fig. (d) represents periodic motion, because it is not identically repeated.