Mathematics

Mathematics

Problem

73. Pendulum Velocity vs. Position As a pendulum swings toward and away from a motion detector, its distance (in meters) from the detector is given by the position function x(t)=3+cos⁡(2t−5)x(t)=3+\cos (2 t-5), where tt represents time (in seconds). The velocity (in m/sec\mathrm{m} / \mathrm{sec} ) of the pendulum is given by y(t)=−2sin⁡(2t−5)y(t)=-2 \sin (2 t-5). (a) Using parametric mode on your grapher, plot the (x,y)(x, y) relation for velocity versus position for 0≤t≤2π0 \leq t \leq 2 \pi. (b) Write the equation of the resulting conic in standard form, in terms of xx and yy, and eliminating the parameter tt.

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