Phase shift of Pendulum SHM and Circular Motion

Very cool SHM experiment. Watch to the end to find out the length of the pendulum. Use the time on the video to compare.

If you work out the cycle time from 1min to 1 min 14s. The ball spins around 10 times. This gives a period T = 1.4s

The string is 0.43cm long which gives a theoretical period time T = 1.32s

Interestingly if you work out the expected length to match the pendulum is should be 48.7cm

[AGZohaib]

i got a bit off ngl as my time was 1.206 and lenght to be 36.14cm