Applications involving Friction - -     Rigid Bodies in Translation

 

Case 2:  Assume sliding occurs in the + x -direction and the body starts from rest.

 

                                     

 

 

 

Step 2

Assume     Fmax  =  μN

Step 3

Solve for acx  using ΣFx =  m acx              

Test

If  F  is opposite  acx, then done and assumption was correct.

 

 

 

Case 3:  Assume sliding occurs in the ˗  x -direction and the body starts from rest.

 

Note:  This case requires a revised free body diagram with friction opposing sliding

            as shown below.

 

                                      

 

Step 2

Assume     Fmax  =  μN

Step 3

Solve for acx  using ΣFx =  m acx              

Test

If  F  is opposite  acx, then done and assumption was correct.

 

 

Click here for an example.

 

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