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A simple pendulum has a period of \( 2 \mathrm{~s} \) and an
P amplitude of \( 2^{\circ} \). After 10 complete oscillations, its

W amplitude reduces to \( 1.5^{\circ} \). Find the value of \( \frac{b}{2 m} \).
[Given, \( \ln (1.333)=0.2877] \)
(1) \( 0.0122 \mathrm{~s}^{-1} \)
(2) \( 0.0144 \mathrm{~s}^{-1} \)
(3) \( 0.0166 \mathrm{~s}^{-1} \)
(4) \( 0.0100 \mathrm{~s}^{-1} \)
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