If in a simple pendulum experiment the length of the inex...
If in a simple pendulum experiment the length of the inextensible string is increased by a factor of four, its period is increased by a factor of?
4
π2
14
2
Correct answer is D
In a simple pendulum, T = 2π√Lg
T1T2=√L1L2 but L2 = 4L1
T1T2=√L14L1
T2 = 2T1