1) A man pulls a box eastward with a force of 80N. Another man pulls the same box with a force of 65N northward, With what force and in what direction must a third man pull the box so the box does not move?
2) A force of 140N is applied on a rope used to pull a crate across a floor. The rope is at an angle of 30 deg. with the floor. What horizontal force is required to keep the crate from moving?
3) A weight of 400N is hung at the middle of a cable wire whose ends are tied to two separate posts making an angle of 20 deg. from the horizontal. Find the tension on the cable.
4) An object weighs 80N and is supported by two cords. Find the tension on each cord.
5) A load of 2400N is suspended by a rope making an angle of 25deg. with the horizontal rod that supports it. Find the tension on the rope and on the horizontal rod supporting the load.
You should do your own work. You learn better that way./
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