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Formula solver
Stress is force per unit area acting on a material
Every other variable is taken from the fields above; σ is what is being solved for.
\sigma = \frac{F}{A}
Constants lookup
Speed of Light in Vacuumc = 299792458 m/s
Planck Constanth = 6.62607e-34 J·s
Reduced Planck Constantℏ = 1.05457e-34 J·s
Elementary Chargee = 1.60218e-19 C
Avogadro's ConstantNᴀ = 6.02214e+23 1/mol
Gravitational ConstantG = 6.6743e-11 N·m²/kg²
Fine Structure Constantα = 0.00729735257
Vacuum Permittivityε₀ = 8.85419e-12 F/m
Formula references
The twelve most-reached-for equations. All 119 are in the formula library.
Normal Stress\sigma = \frac{F}{A}
Normal Strain\varepsilon = \frac{\Delta L}{L_0}
Hooke's Law\sigma = E \varepsilon
Shear Stress\tau = \frac{V}{A}
Torque\tau = F \cdot r
Moment of Inertia (Rectangle)I = \frac{bh^3}{12}
Moment of Inertia (Circle)I = \frac{\pi d^4}{64}
Newton's Second LawF = ma
Kinetic EnergyKE = \frac{1}{2}mv^2
Gravitational Potential EnergyPE = mgh
Power (Work/Time)P = \frac{W}{t}
Power (Rotational)P = \tau \omega