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System: Any system can be treated as a point particle located at the center of mass. — Interactions: Any. |
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{excerpt:hidden=true}*System:* Any system can be treated as a [point particle] located at the [center of mass]. --- *Interactions:* Any.{excerpt}
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h4. Introduction to the Model
h5. Description and Assumptions
This [model|model] is applicable to a [point particle] (or to a [system|system] of objects treated as a [point particle|point particle] located at the system's [center of mass]) when the [external forces|external force] are known or needed. It is a subclass of the model [Momentum and External Force] defined by the constraint _dm/dt_ = 0.
h5. Learning Objectives
Students will be assumed to understand this model who can:
* State and explain the significance of Newton's Laws of Motion.
* Define [normal force] and describe its relationship to [weight].
* Discriminate between [static|static friction] and [kinetic|kinetic friction] friction.
* Explain the role of the [coefficient of friction] in both the [kinetic|kinetic friction] and [static|static friction] cases.
* Construct a [free body diagram] for an object subject to [contact forces|contact force], [gravity|gravity (near-earth)], [elastic forces|Hooke's Law for elastic interactions], and/or [tension forces|tension].
* Construct and solve a system of equations describing the dynamics of more than one object that interact with one another.
h4. S.I.M. Structure of the Model
h5. Compatible Systems
A single [point particle|point particle], or a system of constant mass that is treated as a point particle located at the system's center of mass.
h5. Relevant Interactions
[External forces|external force] must be understood sufficiently to draw a [free body diagram] for the system. [Internal forces|internal force] will always cancel from the equations of Newton's 2nd Law for the system and can be neglected.
h4. Law of Change
h5. Mathematical Representation
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