Sure, it's just another force. It is a bit tricky at a rotational pivot because there will be a torque as well as a force, but if you're comfortable working with torques around an idealized frictionless pivot you'll be able to introduce the effects of friction naturally.macardoso said:Are we allowed to use free body diagrams in dynamic systems where there is non-negligible friction in say the rotational pivot between two linkages?
A free body diagram is a visual representation of all the forces acting on an object. It helps to analyze the motion of an object by showing the magnitude and direction of each force.
Yes, free body diagrams can still be used to analyze motion even if friction at the pivot point is not negligible. However, the presence of friction will affect the magnitude and direction of the forces shown on the diagram, so it is important to account for it in calculations.
To account for friction at the pivot point in a free body diagram, you can add an arrow representing the friction force in the opposite direction of the motion. The magnitude of the friction force can be calculated using the coefficient of friction and the normal force at the pivot point.
The purpose of using free body diagrams in physics is to help analyze the motion of objects by visualizing and understanding the forces acting on them. It allows for the application of Newton's laws of motion to solve problems and make predictions about the behavior of objects.
Yes, free body diagrams are also used in other fields such as engineering, mechanics, and biomechanics. They are a useful tool for analyzing the forces acting on structures, machines, and living organisms.