Three people attempt to haul a heavy sign to the roof of a building by using three ropes attached to the sign. Abby stands directly above the sign and pulls straight up on a rope. Eric and Kim stand on either side of Abby. Their ropes form 30.0 degree angles with Abby’s rope. A force of 102 N is applied on each rope. What is the ent upward force acting on the sign?
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T2 = T1*sin60 = 102*sin60 = 88.3 N.
1 answer