Question

Draw a free-body diagram of the poster. Assume that the wall is to the right of the student. In the process of nailing up a heavy framed poster, a student pushes the poster straight in toward the wall; the poster is sliding downward at a constant speed. Draw the vectors starting at the black dot. The location and orientation of the vectors will be graded. The length of the vectors will not be graded.

Answer 1

Here, the free body diagram for the given system for a given poster is as follows: Wall N W- mg From the above diagram, F is the applied force vector, which pushes the framed poster right, N is the normal vector force pointing left which is opposite to the applied force on wall. The weight vector component w mg pointing straight down since the net moment is downward. Here, at constant velocity the acceleration becomes zero, then it follows: a, 0 mg-f 0 mg f mg N Here, fis the friction force and uis the coefficient of friction between wall and the poster [I.