P16 063

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63.

(a) We set ω = ω

d

and find that the given expression reduces to x

m

= F

m

/bω at resonance.

(b) In the discussion immediately after Eq. 16-6, the book introduces the velocity amplitude v

m

= ωx

m

.

Thus, at resonance, we have v

m

= ωF

m

/bω = F

m

/b.


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