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Quick question on NORMAL FORCE

  1. Oct 17, 2006 #1
    This is an exam review question (I have my exam in about 8 hours lol). My professor didn't give us an answer key.

    "You push a 1.0 kg block against the ceiling with a 40N push force directed 30 degrees above the horizontal. The block doesn't budge. Find the normal force on the block."


    The normal force is perpendicular to the surface, pointing downwards correct? Is it equal to the vertical component of the push force (opposite sign of course..)?
    I wasn't sure if the weight of the block had anything to do with the normal force.

    Thanks in advance :)
  2. jcsd
  3. Oct 17, 2006 #2


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    Draw a free body diagram of the block. Weight acts down. Normal force acts down. Component of applied force acts up. Then apply Newton 1 to solve for N.
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