Find the tension T in each cable and the magnitude and direction of the force exerted on the strut by the pivot in each of the arrangements in Fig. E11.13. In each case let w be the weight of the suspended crate full of priceless art objects. The strut is uniform and also has weight w. Start each case with a free-body diagram of the strut.

Frictional Forces ● Kinetic friction: the friction experienced by surfaces sliding against one another ○ The kinetic frictional force depends on the normal force ■ f μ N k k ○ The constant μ k is called he coefficient f ineti riction. ○ Values of μk usually vary etween 0.1 nd epending on the materials that re interacting. ● Static Friction: the static frictional force keeps an object from starting to move after the force isadded o the ystem. ○ The static frictional force has a limit, maximum