Unformatted text preview: 2020/12/7 Ch. 7 Key Equations - University Physics Volume 1 | OpenStax Key Equations
Work done by a force over an infinitesimal displacement →
→
∣ →∣ ∣ →∣
dW = F ⋅ d r = ∣ F ∣ d r
cos θ
∣
∣
∣ ∣ Work done by a force acting along a path from A to B WAB = ⃗ F ⋅ dr ⃗ ∫
pathAB Work done by a constant force of kinetic friction Wfr = −fk |lAB | Work done going from A to B by Earth’s gravity, near its surface Wgrav,AB = −mg (yB − yA ) Work done going from A to B by one-dimensional spring force Wspring,AB = − ( Kinetic energy of a non-relativistic particle K = Work-energy theorem Wnet = KB − KA Power as rate of doing work P = Power as the dot product of force and velocity ⃗ P = F ⋅ v⃗ 1
2 2 mv = p 1
2 k) (x 2
B − x 2
A ) 2 2m dW
dt 1/1 ...
View
Full Document
