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Definition
| quantity describes both magnitude and direction. |
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| Results when two or more forces are acting along the same line |
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Definition
| occur in the same plane and in the same or opposite direction |
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Definition
| two or more forces must act from a common point but pull in different directions |
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Definition
| occurs when two forces act in an equal but opposite direction resulting in a turning effect |
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Definition
| also known as moment of force, the ability of force to produce rotation about an axis. |
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Definition
| nearly all of the force generated by the muscle is directed back into the joint, pulling the two bones together |
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Definition
| most of the force generated by the muscle is directed at rotating the joint and not stabilizing the joint |
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Term
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Definition
| Force is directed away from the joint |
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Definition
| When an object is balanced, all torques acting on it are even |
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Term
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Definition
| mutual attraction between the earth and an object |
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Definition
| always directed vertically downward toward the center of the earth. |
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Definition
| is the balance point of an object at which torque on all sides is equal. |
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Definition
| imaginary vertical line passing through the COG toward the earth. |
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Definition
| the part of the body that is in contact with the supporting surface. |
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Definition
| occurs when an object is in a position that to disturb it would require the COG to be raised. |
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Definition
| is a rigid bar that can rotate about a fixed point when a force is applied to overcome resistance |
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Definition
| fixed point about which the lever rotates |
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Definition
| causes the lever to move, usually, but not always muscular |
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Term
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Definition
| must be overcome for motion to occur, can include the weight of the part being moved, gravity or external weight |
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Definition
| is the perpendicular distance, or length between the line of force and the axis. |
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Definition
| the perpendicular distance or length between the line of resistance and the axis. |
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Definition
| the ratio between the force arm and the resistance arm. |
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Term
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Definition
| consists of a grooved wheel that turns on an axle with a rope or cable riding in the groove. |
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