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December 18, 2014

Homework Help: physics

Posted by waqas on Saturday, August 6, 2011 at 9:13am.

A 34.2 -kg block rests on the
oor.
(a) What force (N) does the
oor exert on the block?
(b) If a rope is tied to the block and run vertically over a pulley, and the other end is
attached to a free-hanging 5.6 kg weight, what force (N) does the
oor now exert on the
block?
(c) If the free-hanging weight is replaced with a 20 kg weight, what force (N) does the

oor exert on the block?

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