question_answer 3)

Given below Fig.10 (NCT). l 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:

(i) Fig 10 (NCT) 1 (a) does not represent periodic motion, as the motion neither repeats nor comes to 'mean position. (ii) Fig. 10 (NCT). l (b) represents periodic motion with period equal to 2s. (iii) Fig. 10 (NCT). l (c) does not represent periodic motion, because it is not identically repeated. (iv) Fig. 10 (NCT). l (d) represents periodic motion with period equal to 2s.