Calculus-Based Physics by Jeffrey W. Schnick - HTML preview

Chapter 23 Statics

Fix-Connected Members

A fix-connected member is one that is rigidly attached to a structure (such as a wall) that is

external to the object whose equilibrium is under study. An example would be a metal rod, one

end of which is welded to a metal wall. A fixed connection can apply a force in any direction,

and it can apply a torque in any direction. When all the other forces lie in a plane, the force

applied by the fixed connection will be in that plane. When all the other torques are along or

parallel to a particular line, then the torque exerted by the fixed connection will be along or

parallel to that same line.

Example 23-2

A horizontal bar of length L and mass m is fix connected to a wall. Find the force

and the torque exerted on the bar by the wall.

Solution

First a sketch:

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