it's about physics.
2006-10-03 00:15:27 · 4 answers · asked by ghuapo 1 in Science & Mathematics ➔ Physics
Just rough sketches depicting
- objects (using geometric or arbitrary shapes)
- the various forces that act on them indicated by arrows (pointing the direction in which those forces act. Mention the value of the force as a number besides the arrow)
- use the correct representation for support systems like floor, planes, pulleys etc
In short, the kind of line diagram sketches that you see in every mechanics related chapter in physics books!
2006-10-03 00:19:55 · answer #1 · answered by Neil 5 · 0⤊ 0⤋
A free body diagram is a physics diagram in which you draw an object, and all the forces acting on just that object itself. You draw the forces as vectors.
2006-10-03 07:17:11 · answer #2 · answered by عبد الله (ドラゴン) 5 · 1⤊ 0⤋
When a body (engine part?) is embedded within a motor it is difficult to distinguish between forces exerted on it and forces it exerts on other parts. By setting it "free" all by itself, you can use arrows (vectors) to represent the forces and their magnitude that it must resist to remain stationary or in motion. For example a seal may balance a ball on its snout. In a free body diagram the seal can be replaced by an up arrow whose length represents the weight (downward force) of the ball. In both cases the weight of the ball or seal must be shown as a down arrow (pointed toward the center of the earth.) Something is missing if the forces represented by arrows do not balance. A free body diagram of the seal must show the ball as a downward arrow on its snout and an upward arrow representing the force of the floor supporting the seal plus the ball. This method is of great value when analyzing the forces on a complicated mechanism permitting them to be designed just strong enough (plus 10% safety factor?) to save weight and cost of material. Often the free body (seal?) can be represented by a simple block when shape does not affect how forces are applied.
2006-10-03 07:42:21 · answer #3 · answered by Kes 7 · 0⤊ 0⤋
No doubt you are aware of free body diagrams (otherwise known as FBD's). These are simplified representations of an object (the body) in a problem, and includes force vectors acting on the object. This body is free because the diagram will show it without its surroundings; i.e. the body is 'free' of its environment. This eliminates unnecessary information which might be given in a problem.
http://eta.physics.uoguelph.ca/tutorials/fbd/intro.html
2006-10-03 07:25:16 · answer #4 · answered by ashok kumar 3 · 0⤊ 0⤋