Question

The lengths of two simple pendulums A and B are 36 cm and 81 cm respectively.
Find the ratio of their time periods.

Answer 1

Explanation:

let them make 10 oscillations

then their time period=36/10=3.6

and

=81/10=8.1

ratio=3.6:8.1

4/10:9/10

2/5:9/10