.The time periods of two pendulums are in the ratio of 1 : 9 .What is the ratio of their lengths ?
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.The time periods of two pendulums are in the ratio of 1 : 9 .What is the ratio of their lengths ?
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2π
g
l
1
:2π
g
l
2
::2:1
l
1
:
l
2
::2:1
square both sides
(
l
2
l
1
)
2
=(
1
2
)
2
l
1
:l
2
::4:1
Answer:
your and is 4:9...
Explanation:
okk your ans is this in the pic ....