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November 27, 2014

Homework Help: physics

Posted by physics on Friday, September 11, 2009 at 6:05am.

A rope of negligible mass passes over a puley of a negligible mass attached to the ceiling. One end of the rope is held by stdent A of mass 70 kg who is at rest on the floor. The opposite end of the rope is held by student B of mass 60 kg who is suspended at rest above the floor

calculate the magnitude of the force exerted on the floor by student A

I said 700 N and aparently this is wrong and I don\'t see why

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