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| a persons ability to control equilibrium |
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| area bound by the outermost regions of contact b/w a body and support surface or surfaces |
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center of mass
mass centroid
center of gravity |
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| point around which the mass and weight of a body are balanced, no matter how the body is positioned |
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| paor of equal, oppositely directed forces that act on opposite sides of an axis of rotation to produce torque |
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| dynamic equilibrium (D Alembert's principle) |
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| concept indicting a balance b/w applied forces and internal forces for a body in motion |
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| lever positioned whith the applied force and the resistance force on opposite sides of the axis of rotation |
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| the point of support, or axis, whcih a lever may be made to rotate |
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| a simple machine consisting of a relatively ridgid, barlike body that may be made to roate about the axis |
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| ratio of force arm to resistance are from a fiven lever |
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| shortest (perpendicular) distance b/w a force;s line of action and an axis of rotation |
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| specially constructed board for determining the center of gravity location of a body positioned on top of it |
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| lever positioned with the resistance b/w the applied force and the fulcrum |
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| procedure for determiniging total body center of mass location based on the masses and center of mass locations of the individual body segmants |
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| resistance to disruption of equalibrium |
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| motionless state characterized by =0 |
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| lever positioned with the applied force b/w the fulcrum and the resistance |
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| the rotary effect of a force about an axis of rotation, measured as the produc of the force and the perpendicular distance b/w the force's line of action and the axis |
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