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Dipesh Kumar Karesia asked in Physics

plz solve this ....
Example 2.12 The period of oscillation of a simple pendulum is T = 2 π L / g  Measured value of L is
20.0 cm known to I mm accuracy and time  for 100 oscillations of the pendulum  is  found to be 90 s using a wrist watch 1 s resolution. What is the accuracy in the determination of g?

Thank You
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Sandeep K. Gupta answered this