Abbreviations - Biomechanics of the Human Body - page 155

(continued)

Symbol Quantity Symbol of unit

m Mass kg

kg m 2 I Moment of inertia

1/s 2 1s -2 α Angular acceleration ¼

1s -1

f Rotational frequency Hz (hertz), 1 Hz ¼

s -1

ω Angular velocity rad/s ¼

ms -1

v Linear velocity m/s ¼

Δ t Time interval s (second)

K Kinetic energy J (joule)

K ROT Rotational kinetic energy J (joule)

m/s 2 ms -2 g Acceleration of gravity ¼

f s Maximum force of static friction N (newton)

f k Force of kinetic friction N (newton)

μ s Coefficient of static friction Dimensionless

μ k Coefficient of kinetic friction Dimensionless

kg/m 3 kg m -3

ρ ¼

Density

kg m 2 /s kg m 2 s -1

L ¼

Angular momentum

τ Work J (joule)

MA Mechanical advantage Dimensionless

N/m 2 Nm -2 σ Stress ¼ ¼ Pa

m 2 A Area

N/m 2 Nm -2

σ t Tensile stress ¼ ¼ Pa

N/m 2 Nm -2

σ c Compressive stress ¼ ¼ Pa

ε Strain Dimensionless

Y Young's modulus Pa (pascal)

S Shear modulus Pa (pascal)

I Impulse N s