A solid sphere of mass 6 kg and radius 20 cm is suspended from a wire. The time period of its angular oscillation if the torque constant of the wire is 2×10−3 Nm/rad is
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a
12.56 s
b
97.29s
c
15.32 s
d
22.89 s
answer is B.
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Detailed Solution
For torsional pendulam, T=2πIc=2π2MR25cT=2π2×6×(0.2)22×10−3T=4π6×10−2+31T=4π(7.74)=97.29s
A solid sphere of mass 6 kg and radius 20 cm is suspended from a wire. The time period of its angular oscillation if the torque constant of the wire is 2×10−3 Nm/rad is