Question

Compare the time period of two pendulums of length 2m and 9m at a place.
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Answer 1

Answer:

T' = 3T/✓2

Explanation:

T = 2π ✓(l/g)

for this question

T is directly proportional to ✓l

therefore, T/T' = ✓(l/l')

T = T' ✓(2/9)

Or. T' = 3T/✓2