Question

- Part A n g the boxca Apoptruck is carga 140 kg tobox, but the age of the trucki ectly. Assume that the truckbed is horizontal mong The fatic and intriction between the box and the bed are 0.30 and 16 r What is the shortest time the truck could take to accelerate from rest to 10.5 m/s without causing the toolbox to slide? 2.135 Provide Feedback - MacBook Pro c o Search or type URL

Answer 1

Soleettono the toolbox is the frictional The only force that moves force which is shown as: - mg where and mo fn = mg § For shortest time we? f = Ms Fn = ls img I will take maximum , frictional force acceleration a= f = Msg then m . and a= 0.33 x 9.8 = 3.23 m/s2 Vi=0 vp = 10.6 m/s from equations of motion Vt = Vi + at i 10.6 - 3.28 s 3:23 :: option 0 is correct Ita 3.275]