Score 7/9/2018 09:00 AM 73/100 Gradebook Print 8 of 8 Table An object function o

Question

Score 7/9/2018 09:00 AM 73/100 Gradebook Print 8 of 8 Table An object function of time is given as: motion in two r-lcos(ar)i + Lsin the two dimensional harmonic oscillator's distance from the origin and select it from the answers below. Be sure to simplify your expression. cos wr + sin wr O L Next, find an expression for the object's velocity in terms of the variables used above. Be sure to add the hat decoration over any unit vectors you use. It takes the object 0.450 s to complete one oscillation. What is the object's speed if its distance from the origin (radius of the circle) is 0.200 m? m/s Hint

Explanation / Answer

1) L

2) v = dr/dt = -L*wsin(w*t) i + L*w*cos(w*t) j

3) v = 2*pi*r/T = 2*3.14*0.2/0.45 = 2.79 m/s

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