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Two particles start moving simultaneously from the same point and execute simple harmonic motion along the same line. Distances of the particle from their equilibrium position are x1=4cos4πtcmandx2=4cos4πt+π3cm. Then maximum separation between the particles is 

a
23 cm
b
4 cm
c
3 cm
d
33 cm

detailed solution

Correct option is B

Particles are oscillating with same frequency and the phase difference between them is π3. From the phasor diagram it is evident that separation between the particle M and N is maximum when their respective reference particles P and Q are symmetrically placed about the y-axis.∴ Maximum separation =OM+ON=4sinπ6+4sinπ6cm=4 cm

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