deg. =-, di i = rê, +rò e, a = {* -ro?)ê, + (rö + 2r)e, 9 -=@e 2) A particle travels counter-clockwise in circular motio

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Deg Di I Re Ro E A Ro E Ro 2r E 9 E 2 A Particle Travels Counter Clockwise In Circular Motio 1 (232.84 KiB) Viewed 43 times

deg. =-, di i = rê, +rò e, a = {* -ro?)ê, + (rö + 2r)e, 9 -=@e 2) A particle travels counter-clockwise in circular motion in the x-y plane around a circle of radius b centered at che origin. The speed of the particle is given by v = 12t - 6t2. (standard SI units). The particle starts at 1 0 on che positive x-axis and travels only one revolution around the circle during the time interval 0 <1<2.00 s. a) Determine the numerical value of the radius, b. b) Find (0),v(l),ä(t). and 0(0). Use the plane polar unit vectors when appropriate. c) At what time(s) during 0 <7<2.00 s is the position vector perpendicular to the velocity vector? d) Write an equation in terms of and b that could be used to find the times when the velocity makes a 45' angle with the acceleration. (no need to solve this eanation!