A crate of oranges weighing 134 N rests on a flatbed truck 2.0 m from the back o

Question

A crate of oranges weighing 134 N rests on a flatbed truck 2.0 m from the back of the truck. The coefficients of friction between the crate and the bed are µs = 0.43 and µk = 0.20. The truck drives on a straight, level highway at a constant 7.4 m/s.

(a) What is the force of friction acting on the crate? ____ N

(b) If the truck speeds up with an acceleration of 1.9 m/s2, what is the force of the friction on the crate? magnitude _____ N

(c) What is the maximum acceleration the truck can have without the crate starting to slide? _____ m/s2

Explanation / Answer

a) 0 b) (134/9.8)* 1.9=25.97 c)9.8 * (Us=.43)=4.214

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