Posted by arcos15 on Monday, September 10, 2012 at 12:51am.
A sign whose weight is 95 lbs is held up by a chain.
(1) With what force does the chain need to be pulled up to keep the sign in place?
___________ lbs
(2) Jenna writes a mathematical description,
95 lbs +  95 lbs = 0. What does the sign of each number represent? MULTIPLE CHOICE
a).that one is a chain force and one is gravity
b).how much force is added or subtracted to her hand
c).the direction in which each force is exerted

Physics  arcos15, Monday, September 10, 2012 at 1:08am
95LBS
AND
C

Physics  Tsz Yung, Monday, September 10, 2012 at 4:29pm
1)F=mg
F=95(9.8)
2) c
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