A pendulum whose length is 36cm has time period 1.25 find the time period of another pendulum whose length is 81 cm
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Answer:
T = 2pie✓l/g
T directly proportional to √ l
t1/t2= √ l1/l2
1.25/t2= √ 36/81
1.25/t2= 2/3
1.25*3/2= t2
1.875= t2
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