Two window washers are on a scaffold. The scaffold weighs 70 lb, the man on the left weighs 180 lb, and the man on the right weighs 195 lb. The left support has a force of 310 lb in the cable. What is the force in the right cable?

F=135

The right support have 135N force

Explanation:

Summation of the forces along y axis equals zero.

Then, all the weights are acting downward except for the reaction acting upward.

Let the right support be F

-70-180-195+310+F=0

-135+F=0

F=135N. Upward