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Some Types Of Forces

Table 6-2

Tension Definition: The pull exerted by a string, rope, or cable when attached to a body and pulled taut. Direction: Away from the object and parallel to the string, rope, or cable at the point of attachment.
Friction Definition: The contact force that acts to oppose sliding motion between surfaces. Direction: Parallel to the surface and opposite the direction of sliding.
Normal Definition: The contact force exerted by a surface on an object. Direction: perpendicular to and away from the surface
Spring Definition: A restoring force, that is, the push or pull a spring exerts on an object. Direction: Opposite the displacement of the object at the end of the spring
Thrust Definition: A general term for the forces that move objects such as rockets, planes, cars, and people. Direction: Same as the acceleration of the object barring any resistive forces.
Weight Definition: A long-range force due to gravitational attraction between two objects, generally Earth and an object. Direction: straight down toward the center of the earth.
Created by: 1462916049

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