Question

The measurement value of length of simple pendulum is 20 cm known with 2mm accuracy .the time for 50 oscillation was measured to be 40 swithin 1s resolution . calculate the percentage acciracy in the determination of acceleration die to gravity 'g' from above measurements.

Answer 1

It will resolve 1 resolution = 45 switches.
So, if g = 9.8 m/s^2, then resolved all switches.