Circular motion:

Times:

  • 200g: 19s, 20, 19.91
  • 250: 19.04, 17.95, 19.83
  • 300g: 16.07, 18.09, 17.31

different radius: 250g

  • 50cm: 13.58, 13.16, 12.52

  • 75cm: 13.36, 15.75, 16.56

  • 1m: 18.37, 18.88, 17.58

error: 1m too big, keep velocity same (human error), the thing slips