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If the length of pendulum is made 9 times and mass of the bob is made 4 times then the value of time period becomesA) 3TB) 3/2Tc) 4TD) 2T |
Answer» A) 3T Explanations: The periodic time of a simple pendulum is given by \(T=2\pi\sqrt{\frac{l}{g}}\) \(T_1 =T,l_1=l,l_1=9l\) \(\frac{T_1}{T_2}=\sqrt\frac{l_1}{l_2}=\sqrt\frac{1}{9}=\frac{1}{3}\) \(T_2=3T_1=3T\) |
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