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6. A pendulum completes 2 oscillations in 5 s. (a) What is its time period ? (b) If g = 9.8 ms, findits length.Ans. (a) 2.5 s, (b) 1.55 m |
| Answer» TION:From UNITARY method if 2 OSCILLATION COMPLETE in 5 sec then 1 oscillation complete in 5/2 = 2.5 s | |