7th Class
Science
Time and Motion
Question Bank
Motion and Time
question_answer
The bob of a simple pendulum is set in motion (to and fro motion). In the beginning its time period was Is. After 30 oscillations, the bob appears to have slowed down; the time of one complete oscillation then would be
A)1.5s
B)2s
C)1 s
D)can't predict
Correct Answer:
C
Solution :
The time period of a simple pendulum remains constant