Exam 2 2-25 2015 ENGR 2302 Examl 4. The rod OA is rotating in the horizontal plane such that 0-3t' rad. At the same time, the collar B is sliding outward along OA so that r- (40) mm. If in both casest is in seconds, determine the velocity and acceleration of the collar when t-4 sec. =34 += 40+² D=9+ r=80+ : 181 F= 80 10(0)) Fir+ (10) (96) F. 320 640