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8 Cards in this Set
- Front
- Back
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What is mechanics? |
Mechanics is the science which describes and predicts the conditions of rest, or motion of a bodies under the action of forces, and it is an applied science. |
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What are the Force Systems that Statics includes? |
1a. Concurrent - Coplanar (in the same plane) 1b. Non-concurrent - Coplanar
2a. Concurrent - Non-Coplanar 2b. Non-Concurrent - Non-Coplanar
So concurrent coplanar force systems are those that pass through the same point, within the same plane. Non-concurrent and coplanar are in the same plane, but these forces do not pass through the same point.
Conversely, concurrent - non-coplanar force systems do pass through the same point but are not in the same plane. Non-concurrent and non-coplanar force systems are neither in the same plane nor do they pass through a single point. |
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What are the application of Statics? |
Statics is applied to understanding Trusses, Frames, Centroids (center of mass of object with uniform density), Moments of Intertia, Friction, etc. |
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What is Statics? |
The study of physics that deals with equilibrium of bodies at rest, or that move with a consistent velocity. |
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[Side Note] What is Dynamics? |
Dynamics is the study of bodies in motion. |
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[Side Note] What are the two sub-divisions of Dynamics? |
Kinematics and Kinetics. |
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[Side Note] What is Kinematics? |
Kinematics deals with the space-time relationship of a given motion of a body, but it doesn't care about the forces that cause the motion.
For example, imagine a wheel rolling along a straight level track with uniform speed, the determination of the shape of the path described by a point on the wheel's rim and the position along this path tat the chosen point will occupy at any given instant are problems of kinematics. Again, kinematics isn't interested at all in the forces that cause the motion. |
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[Side Note] What is Kinetics? |
Kinetics deals with finding the kind of motion that a given body, or system of bodies will have under the action of given forces, or with what forces must be applied to produce a prescribed motion.
For example, If a constant horizontal force is to be applied to a given body that rests on a smooth horizontal plane, the prediction of the way in which the body will move is a problem of kinetics. |
