7/03  The solutions for test 4 are now available
      at the Noble Library Copy Center.

6/28  Because of a changeover in management of the
      Noble Library Copy Center, posting of test 4
      solutions will be delayed until at least Monday.

6/22  The solutions for test 3 are now available 
      at the Noble Library Copy Center.

6/14  The solutions for test 2 are now available 
      at the Noble Library Copy Center.

6/06  There was an error in the key for the YELLOW 
      version of test 1.  If you had a YELLOW test,
      check your answer to MC#5.  The correct answer
      was A, but the key had D as the answer.  So
      if your answer was A or D, please return your 
      test to your TA for correction.  If your answer 
      was B or C, you are not affected by this
      mistake.  If your answer was A, your MC grade
      will be increased by 5 points; if your answer
      was D, your MC grade will be decreased by 5 
      points.  The solutions for test 1 are now
      available at the Noble Library Copy Center.

6/04  Late additions in tonight's HW to Chapter 5
      Problem 9.  In both parts (a) and (b), also
      give the magnitude of the normal force exerted
      on the block by the surface.