Question

Chapter 05, Problem 07 Interactive Solution 5.07 presents a method for modeling this problem. The blade of a windshield wiper moves through an angle of 90.0 in 0.344 S. The tip of the blade moves on the art of a cirde that has a radius of 0.719 m. What is the magnitude of the centripetal acceleration of the tip of the blade? Number Units the tolerance is +/-2%

Answer 1

Soln Griven, the cueular Path, 0'719 m Radins Time equthed to mave haugh an angle 7 90° t 0 344 sec i's the cince Since an angu 90 Conessponds founth to ferencea One ihe ciHcum Cince he di'stance i's Hence (2H) t velady TH) रस) he a blade hence Since tip is ab end to cento ditance is OA h (fucm fg)) tip Hence, Radial centnipetal aceleration f the The blade is given by tipd a puling valu fromu) The лА a ta

2 a 4t2 We have 7T3.1415 0719 m O 344 Aec t : Acceloratn CMagnitude) tne tip (в 1419) х 6-719) 4x (о4)2 2 X 2 ms 15 m3 14.2908 ms a Hence the centnipetal acceloration (O adial atcelerata) 1he tip is a 15 ms