Mail u0003668 x D Los Solving Linear x MG A particle is in unifc x C https//edug

Question

Mail u0003668 x D Los Solving Linear x MG A particle is in unifc x C https//edugen wileyplus.com/edugen/lti/main.uni Return to Blackboard US Halliday, Ful tals of Physics, 10e Help System Announcements Unread) Chapter 04, Problem 098 A partide is in uniform drcular motion about the origin of an xy coordnate system, moving clockwise with a period of 5.10 s. At one instant, its position vector (from the origin) is 4.50 m Ji- 2.80 m J. At that instant, what is its velocity in unit-vector notation? Units Sadow HINT LINK TO TEXT LINK TO SAMPLE PROBLE LINK TO SAMPLE PROBLE LINK TO SAMPLE PROBLE VIDEO MINI HECTURE MATH HELP MATH HELP MATH HELP By accessing this Question Assistance, you will learn while you earn points based on the Point potential Policy set by your instructor,

Explanation / Answer

Time period T = 2*pi*|r| / |v|.................where we have used magnitude of radius of circular motion and magnitude of velocity

T = 5.1 s..............|r| = 5.3...........so .........|v| = 6.529 m/s.
also velocity vector and radius vector are always perpendicular in circular motion. so, r.v = 0 (dot product is zero)
let v = vx i + vy j
so r.v = 4.5*vx - 2.8*vy = 0
4.5*vx = 2.8*vy.............also we have.....|v| = 6.529

therefore we get ............v = 3.45 i + 5.54 j

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