PY 211 North Carolina State University Module 16

Problem 5 A book of mass 7 kg rests on a plank. You tilt one end of the plank and slowly increase the angle of the tilt. The coefficient of static friction between the book and the plank is 0.46. What is the maximum angle of tilt for which the book will remain stationary and not slide down the plank? Problem 6 A contestant in a winter games event pushes a 32.0 kg block of ice across a frozen lake as shown in the figure below. The coefficient of static friction is 0.1 and the coefficient of kinetic friction is 0.03. (Assumea = 21.) \\\\ \\_,\\a. l :5 m4, E A. Calculate the minimum force F(in N) he must exert to get the block moving. B. What is its acceleration (in I'll/52) once it starts to move, if that force is maintained