Error Analysis

Question

1.If the error in the measurement of the momentum of a particle is (+100%). Then the error in the measurement of kinetic energy is:

(a) 400% (b) 300% (c) 100% (d) 200%

2.The lenght of a simple pendulum is about 100 cm known to have an accuracy of 1 mm. Its period of oscillation is 2 s determined by measuring the time for 100 oscillations using a clock of 0.1 s resolution. What is the accuracy in the determined value of g ?

(a) 0.2 % (b) 0.5 % (c) 0.1 % (d) 2 %

Ramesh V · Accepted Answer

(1) KE = 1/2 mv^2, where mv = p = momentumKE = p2 / 2md(KE)/KE = 2d(p)/perror in mesrmnt of KE = 2*100 % = 200% option D(2) time period is T = 2*pi*(l/g)1/2g = 4*Pi*Pi*L/T2log g = log C + log(L) - 2 log (T)d(g)/g = d(L)/L+ 2 d(T)/T=0.1/100 + 2*0.1/(2*100)= 2/1000 = 0.2%--regardsRamesh

General Physics> Error Analysis...

hemanth c , 15 Years ago

Ramesh V

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General Physics> Error Analysis...

hemanth c , 15 Years ago

Ramesh V

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