Recitation Quiz 4 Solutions

# Recitation Quiz 4 Solutions - The angular acceleration, u,,...

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Quiz for Tuesduy, September I 1. Version A: A particle undergoes circular motion. It is 50 cm from the axis or rotation and it moving in the x-y plane. 0(t) - 6 + 5(s-11t -Z1s-21t2. (a) At t :2 s,what is the magnitude of the particle's velocity? (b) At t : 2 s, what is the magnitude of the q t*r a-11 =ufut Version B: A particle undergoes uniform circular motion. It is 25 cm from the aris of rotation and is moving in the x-y plane. It takes 10 seconds forthe particle to complete a single revolution. (a) What is the magnitude of the particle's velocity? (b) What is the magnitude of the particle's acceleration? .AT--T -Vo=T:ot(-14, t\ nu\\$= r/\ - -')-anf\ Yq =1.t1v\o -F r 1.. O R- C\u.ry L^r r :- {-1 C. *1". i.-d- -_-l'\ luU f a\t. LT\' ,*tt f 2- 's
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Unformatted text preview: The angular acceleration, u,, is 20 s-2. The particle starts at rest at 0 - 0 at t - 0. (a) What is the magnitude of the particle's velocity att - 0.5 s? (b) What is the magnitude ofthe particle's acceleration att:0.5 s? {: l5i {tl Wo= ?) * 'J.r.' O \ r '''i- ,J.,o+{t\-- o t U-J (o,{ u) = lA {t Ct,\ G)try \ &quot; l=\',^-, r\ : \ ^nt s \q\ = \ , . - r ' r ,. 4 t- ; -)r iF*. 'i\I= '* I &quot;,* t\ * *t-&quot;t\ft; lO.t- 'vrn(s The maenitude of its t n , ^ ^ r - T / - \ r r r ' - ^ r i . velocity is 5 m/s and the magnitude of its radial acceleration is 10 m/s'. (a) What is the particle's angular velocity? (b) What is the radius of the particle's path? \v\- ur r \ct**,\' we fl L , : \5ln,r,\ : Ui ld - &quot;l- 'r {' i L,-. .i '*NT- ( ^^.1 3 \v\ =* r :=&quot; r .: !u- .' tt a .''{ 'vv\...
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## This homework help was uploaded on 03/27/2008 for the course PHYS 221 taught by Professor Herrera-siklody during the Fall '08 term at Iowa State.

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