Data: Trial r(m) d(m) L(m) Fstatic(N) 1/r2 (1/m2) 1 0.05 0.051 0.17145 0.0000293 400 2 0.06 0.037 0.17145 0.0000211 277.78 3 0.07 0.028 0.17145 0.0000160 204.088 4 0.08 0.022 0.17145 0.0000126 156.25 5 0.09 0.016 0.17145 0.00000915 123.46 6 0.10 0.011 0.17145 0.00000628 100 Evaluation of Calculations: To find F static Data: Mass of pith ball = m = .01 g * 1/1000kg = 0.00001 kg g = 9.8 N/kg L = 0.17145 m Fstatic = (mg)(d/L) = (0.00001 kg * 9.8 N/kg) *(0.051 m/0.17145 m) = 0.0000293 N To find 1/r2: 1/ (0.05 m)2 = 400 1/m2