Question

the time period of two simple pendulums at a place are in ratio 2:1. What will be ratio of their length

Answer 1

T=2π√[l/g]

we can se T² is directly proportional to length

so L1/L2=(T1/T2)²

T1/T2 is 2:1

so L1/L2=4/1

hope it will help you..

Answer 2

Answer:

T1/T2=L1/L2

2×2/1×1=L1/L2

L1/L2=4:1