University Physics Volume 1

# Key Equations

### Key Equations

 Net external force $F→net=∑F→=F→1+F→2+⋯F→net=∑F→=F→1+F→2+⋯$ Newton’s first law $v→=constant whenF→net=0→Nv→=constant whenF→net=0→N$ Newton’s second law, vector form $F→net=∑F→=ma→F→net=∑F→=ma→$ Newton’s second law, scalar form $Fnet=maFnet=ma$ Newton’s second law, component form $∑F→x=ma→x,∑F→y=ma→y,and∑F→z=ma→z.∑F→x=ma→x,∑F→y=ma→y,and∑F→z=ma→z.$ Newton’s second law, momentum form $F→net=dp→dtF→net=dp→dt$ Definition of weight, vector form $w→=mg→w→=mg→$ Definition of weight, scalar form $w=mgw=mg$ Newton’s third law $F→AB=−F→BAF→AB=−F→BA$ Normal force on an object resting on ahorizontal surface, vector form $N→=−mg→N→=−mg→$ Normal force on an object resting on ahorizontal surface, scalar form $N=mgN=mg$ Normal force on an object resting on aninclined plane, scalar form $N=mgcosθN=mgcosθ$ Tension in a cable supporting an objectof mass m at rest, scalar form $T=w=mgT=w=mg$ Do you know how you learn best?
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