T906097s 0677 rps avg 0694 rotations per second

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T90=60.97s= 0.677 rps Avg= 0.694 rotations per second % discrepancy of Fc and Fstatic =5.618 % TABLE A: CHANGING THE RADIUS Source of Data r (meters) <T> (sec) F c (Newtons) F static (Newtons) δ (%) Part I 0.167 m 0.727 sec 5.60 N 6.08 N 7.83 % Part II 0.182 m 0.693 sec 6.72 N 7.35 N 8.60 % 0.199 m 0.668 sec 7.90 N 8.53 N 7.28 % TABLE B: CHANGING THE MASS Source of Data M bob (kg) r 3 (meters) <T> (sec) F c (Newtons) F static (Newtons) δ (%) Part II 449g .199 m 0.668 sec 7.90 N 8.53 N 7.28 % Part III 499g .199 m 0.694 sec 8.14 N 8.62 N 5.61 % Calculations Average T = T N / N from your three runs + avg T50/ 41.49s = 0.824 rotations per second T70/ 50.41s= 0.720 rps T90/ 65.40s= 0.727 rps Avg= (0.824+0.727+0.720)/3 = 0.757 Rotations per second Fc (4 ? ²R x m ) = 4 ? (0.167) (0.449) = 5.60 N (0.727)² Fstatic mBob x G = Fstatic .449kg x 9.8 m/s² = 6.08 N
% discrepancy δ = F c – F static x 100% = (6.08 -5.60)/6.08 x100= 7.83% F static Questions: Question #1: Explain why both values of F in Table B should theoretically be equal while this is not true for the values of F in Table A.

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