A ring is hung on a nail. It can oscillate, without slipping or sliding (i) in its plane with a time period T1 and, (ii) back and forth in a direction perpendicular to its plane, with a period T2 . The ratio T1T2 will be
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a
23
b
23
c
23
d
32
answer is B.
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Detailed Solution
As time period of physical pendulum T=2πImglcThus T1=2πmR2+mR2mgR=2π2Rg , T2=2πmR22+mR2mgR=2π3R2g⇒T1T2=23
A ring is hung on a nail. It can oscillate, without slipping or sliding (i) in its plane with a time period T1 and, (ii) back and forth in a direction perpendicular to its plane, with a period T2 . The ratio T1T2 will be