Homework Help: Physics

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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