Mathematics, 15.04.2020 04:11 hannahliebl2000
Answer the following questions. Be sure to show your work. A weight is attached to a spring suspended vertically from a ceiling. When a driving force is applied to the system, the weight moves vertically from its equilibrium position, and this motion is modeled by
y = 1/3 sin2t + 1/4 cos2t
where y is the distance from equilibrium (in feet) aud t is the time (in seconds).
(a) Use the identity
a . sin B theta + b . cos B theta = (a^2 + b^2)^1/2 . sin(B theta + C)
where C = arctan(b/a), a > 0,
to write the model in the form y = (a^2 + b^2)^1/2 sin(Bt+C).
(b) Find the amplitude of the oscillatious of the weight.
(c) Find the frequency of the oscillations of the weight.
Answers: 2
Mathematics, 21.06.2019 16:40, pagezbills18
What is the ratio of the change in y-values to the change in x-values for this function? a) 1: 13 b) 2: 5 c) 5: 2 d) 13: 1
Answers: 3
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