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| real solids, gases, or liquids |
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| It is a real body with no size or shape (ignoring size, shape) not a point, only representation |
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| Real body with defined size and shape but changes in size/shape ignored |
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| are either external and internal to the body |
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| Internal forces are present in particles T or F |
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| Lines of action of all forces intersect at one single point |
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| act at different points on an object and result in a net turning moment, or torque, acting on the object. |
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| Non concurrent forces act on a particle T or F |
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| All forces acting on a particle are concurrent T or F |
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| Forces acting on a particle are non parallel T or F |
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| The lines of action of all parallel forces must be separated by a finite distance T or F |
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| Can a particle be subjected to parallel forces? |
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Definition
| The Principle of Transmissibility can be applied to a particle T or F |
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| The Principle of Transmissibility |
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Definition
| States that push and pull are the same. If a force acting at a given point of the rigid body is replaced by a force of the same mag. and dir. , but acting at a different point. |
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| not drawn in scale but in proportion |
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| Forces acting on a rigid body or bodies, shows where the forces are acting and you can see all the LOA |
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| It is a diagram showing forces arranged in a certain order for the sole purpose to construct a triangle to get resultant or to compare two forces to the third one |
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| Equilibrium of a particle all forces must be concurrent T or F |
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Definition
| Angle given vector makes with the y-axis in a plane containing the vector and the +y-axis between 0 and 180 |
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| The angle the projection makes with the x-axis in a plane containing the projection of the vector and the +x-axis between 0 and 180 |
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| (Theta)x, (Theta)y, (Theta)z are called directional cosines T or F |
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Definition
| The sum of the squares of the directional cosines is equal to |
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