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1) TABULATE S/N;1,2,3,4,5 M(N):140,120,110,84,66 tita(degrees);24,32,38,51,62 Sin tita;0.4.67,0.5299,0.6156,0.7771,0.8829 vi) Slope(s)=(84-140)/(0.7771-0.4067) =-56/0.3704 =-151N/degree vii) -I will ensure the experiment is repeated in the specified number of times -I will avoid error of parallax bi) -The total upward force must be equal to total downward forc -The sum of clockwise moment must be equal to the sum of anticlockwise moment (ii)Clockwise moment =m*10 Anticlockwise=Wsintita*40 °°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°° 3a) (i)d1=1.40cm, d2=1.55cm, d3=1.75cm, d4=2.1cm, d5=2.3cm Real values of di d1=1.4*0.5=0.7mm d2=1.55*0.5=0.77mm d3=1.75*0.5=0.875mm d4=2.1*0.5=1.05mm d5=2.3*0.5=1.15mm (ii) Ia1=2.4A, Ia2=3.8A, Ia3=5.0A, Ia4=7.4A, Ia5=11.6A Ib1=2.4A, Ib2=3.6A, Ib3=5.2A, Ib4=7.5A, Ib5=11.6A (iii) I=(Ia+Ib)/2 I1=(2.4+2.4)/2=2.4A I2=(3.8+3.6)/2=3.7A I3=(5.0+5.2)/2=5.1A I4=(7.4+7.5)/2=7.45A I5=(11.6+11.6)/2=11.6A (3aiv) logd1=log0.7=-0.15mm logd2=log0.775=0.11mm logd3=log0.875=0.06mm logd4=log1.05=0.02mm logd5=log1.15=0.06mm logI1=log2.4=0.38 logI2=log3.7=0.57 logI3=log5.1=0.71 logI4=log7.45=0.87 logI5=log11.6=1.06 (3av) TABULATE S/N; 1,2,,3,4,5 di(cm);1.40,1.55,1.75,2.10,2.30 di(mm);0.70,0.78,0.88,1.05,1.15 Ia(A);2.4,3.8,5.0,7.4,11.6 Ib(A);2.4,3.6,5.2,7.5,11.6 I(A);2.4,3.7,5.1,7.5,11.6 logd!(mm);-0.15,-0.11,-0.06,0.02,0.06 logI1;0.38,0.57,0.71,0.87,1.06 (vii)|Slope(s) =change in logI/change in logd =(0.87-0.57)/(0.02-(-0.11)) =0.3/0.13=2.3A (vii) -I will ensure the circuit is open when no readings are not taken -i will ensure tight connection bi) diameter(d)=1.09mm ii) R=eL/A R=(5.0*10^-2*0.01)/(pie/4)*(0.001)^2 R=(5*10^-4)/(0.7855*1*10^-6) =6.37*10^2ohm P=I^2R =10^2*6.37*10^2 =6.37*10^4W °°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°

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