Physics
posted by arcos15 .
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
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