Hor LTX MasteringPhysics: Ch 10 vector Review - Micrasott Edge session.mastering

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Hor LTX MasteringPhysics: Ch 10 vector Review - Micrasott Edge session.masteringphysics.com/myct/itemView?assignmentProblemID-86881740 Susan . Ch 10 Vector Review Problem 10.33 previous | 23 of 27 | next » Problem 10.33 Part A What is r(t) in polar coordinates? Express your answer in terms of some or all of the parameters A, and 1. Translate the position function r(L) A cos(ut)i Asin(wt)j into polar coordinates, where A and are constants. r(t) = Submit My Answers Give Up Part B What is (t) in polar coordinates? Express your answer in terms of some or all of the parameters A, and t. 0(4)- Print Assignment Submit My Answers Give Up 4.40 PM Type here to search 10/29/2017 3

Explanation / Answer

r(t) = sqrt(rx^2 + ry^2)

r(t) = sqrt((A*coswt)^2 + (A*sinwt)^2)

r(t) = sqrt(A^2) = A

part B

theta = tan^-1(ry/rx)

theta = tan^-1(-Asinwt/A*coswt)

theta = tan^-1(-tanwt)

theta =-wt

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