Q.
A pendulum oscillates in a vertical plane. When the bob is at extreme position, its acceleration is 5m/s2. If g=10 m/s2, angular amplitude of oscillation of the pendulum is
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Detailed Solution
At extreme position A, tangential unbalanced force acting on the bob is mg sinϕ. So acceleration at this position a=mgsinϕm=gsinϕ∴Given 10 sinϕ=5⇒sinϕ=12⇒ϕ=30o
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