- #1

unknown_2

- 29

- 0

it asks to resolve the couple forces.

the answer is:

(4/5)(60lb) = 48lb

and

(40lb)(cos30)

[tex]\sum[/tex]M = -(48lb)(4ft) + (40lb)(cos30)(8ft)

Now, i don't understand why "-(48lb)(4ft)" is negative. I'm not sure when to use a negative value. Can someone explain this to me?

Cheers