Newton's Laws
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The weight of an object FW is the gravitational force acting downward on the object.

FW = m g

Slide 14

Tension (Tensile Force)

Tension is the force in a string, chain or tendon that is applied tending to stretch it.

Slide 15

The normal force on an object that is being supported by a surface is the component of the supporting force that is perpendicular to the surface.

Slide 16

Kinetic Friction

Ff = mk FN

Static Friction

Ff  ms FN

In most cases, mk < ms.

Slide 17

On to problems .

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