1. A force of 42 N is needed to start a box sliding across the floor. The weight of the box is 55 N. Draw all the forces acting on the box. a. How large is the force of friction? F-fmax 0 fmax=f F-f-0 42N-f-0 fmax:42N Answer b. Is the fritional force stotic or kinetic? The frictional force is static because | e. What is the coefficient of friction? fy=0 fn-w-0 FN=W=55N u=42/55 u O 764

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