Energy Formulas

Energy Formulas - The following formulas or concepts should...

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The following formulas or concepts should be learned by heart when you prepare for the test. x xy yz AB AB AB AB ⋅= + + G G z Or cos AB AB φ G G when A and B is the magnitude of A G and B G ˆ ˆˆ x x ij k AB A A A B BB ×= G G (you should know how to calculate this) or sin AB A B G G You should know how to determine the direction of the vector product. Fm a = G G 0 vv a t =+ 2 00 1 2 x x x xv t a t + or 2 0 1 2 oy y yyv t a t + Centripetal acceleration : 2 v a r = Frictional force : f n μ = n: normal force Kinetic energy : 2 1 2 mv Work done by force : WF d =⋅ G G s Work-energy theorem : 22 11 tot f i Wm v m =− v Power : dW P dt = Potential energy by gravity : mgh
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Potential energy by a spring : 2 1 2 kx Mechanical energy = kinetic energy + potential energy
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This note was uploaded on 04/03/2008 for the course PHYS 2305 taught by Professor Tschang during the Spring '08 term at Virginia Tech.

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Energy Formulas - The following formulas or concepts should...

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