1.

Find the resulting amplitude and phase of the vibrations s=Acosomegat+(A)/(2)cos(omegat+(pi)/(2))+(A)/(4)cos(omegat+pi)+(A)/(8)cos(omegat+(3pi)/(2))

Answer»


SOLUTION :APPLY the vector diagram Fig. Here
`B=sqrt((A-(A)/(4))^(2)+(A/(1)-(A)/(8))^(2)),tanvarphi=((A//4)-(A//8))/(A-(A//4))=(1)/(2)`


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