CK-12-Physics - Intermediate

5.4. Forces in Translational Equilibrium http://www.ck12.org

FIGURE 5.26

T 1 = 414. 11 = 414 = 410 N

T 2 = 585. 56 = 586 = 590 N

Check your understanding

What general equation can be written for∑
y

Fif the angles inFigure5.26 are equal?

Answer: The sum of they−components is responsible for supporting the weight. If the angles are equal, the ropes
have equal tension. Therefore, the tension in they−direction of either rope can quickly be found since:

∑

y

F= 2 Ty=mg→Ty=

mg

2

1. The normal force depends upon many different forces.


2. Maximum static friction is greater than kinetic friction.


3. Friction acts to oppose the motion that would be caused by an applied force thus opposing the relative motion
   between two surfaces. When an object slides along a surface, friction acts opposite to its motion. When you