A simple pendulum of length 0.4m has a period of 2s. What is the period a similar pendulum of length 0.8m at the same place?
-
A.
8s -
B.
4s -
C.
2(sqrt{2}s) -
D.
(sqrt{2}s)
Correct Answer: Option C
Explanation
T2 = (sqrt{frac{L^2 times T_1^2}{L_1}})
= (sqrt{frac{0.8 times 2^2}{0.4}})
= 2(sqrt{2}s)
There is an explanation video available below.