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A point mass is subjected to two simultaneous sinusoidal displacements in x- direction, `x_1(t)=A sinomegat and x_2(t)= A sin(omegat+(2pi)/3)`adding a third sinusoidal displacement `x_3(g)=Bsin(omegat+phi)` brings the mass to a complete rest. The value of B and `phi` are:
A. |
`sqrt2A, (3pi)/4` |
B. |
`A, (4pi)/3` |
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C. |
`sqrt3 A, (5pi)/6` |
D. |
`pi/3` |