Question
Physics Question on simple harmonic motion
The length of the simple pendulum which ticks seconds is
A
0.5m
B
1m
C
1.5m
D
2m
Answer
1m
Explanation
Solution
The time period of a simple pendulum is T=2πgL where L is length of the pendulum or L=4π2gT2 …(i) The time period of the simple pendulum which ticks seconds is 2s ∴T=2s Substituting in (i), we get L=4×(3.14)2(9.8ms−2)(2s)2=1m