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More help with forces

  1. Sep 25, 2004 #1

    A Block Is Held In Place On A Frictionless Incline By A Massless String. The String Is Horizontal. What Forces Are Exerted On The Block????

    Can Someone Explain This To Me!???????
  2. jcsd
  3. Sep 25, 2004 #2
    How can the string be horizontal but also be on a frictionless incline? Did you summarise the question? I'll just assume you meant horizontal to the incline.

    Consider what forces are acting on the block. Consider the role gravity plays in making the block want to accelerate downward and the role other forces are playing to keep it still. Which force(s) is/are this/these? It may help to break gravity up into components parallel and perpendicular to the frictionless incline.
  4. Sep 26, 2004 #3
    the force of gravity and the string?
  5. Sep 27, 2004 #4
    Well yeah but to be more accurate the tension in the string.
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