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Chapter 11, "Newton's Laws"Weightw = mg where m = mass and g = acceleration due to gravity (–9.8m/s2 on Earth). Newtons1N = 1kg*m/s2 1N = 0.2248lbs Static FrictionFS = –mSN where N is the normal force. Kinetic FrictionFK = –mKN where N is the normal force. Free-Body DiagramNewton's First LawIf Fnet = 0, no change in motion occurs. Newton's Second LawFnet = ma where m is mass and a is acceleration. Newton's Third LawFor every force there is an equal and opposite force, or, when two objects come into contact, they exert equal and opposite forces upon each other. |
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