Bulk Modulus
Bulk modulus measures a material's resistance to uniform compression.
Variables
Derivation
B = -V(dP/dV). The negative sign ensures B is positive since ΔV is negative for positive ΔP.
Your notes
Check value
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- ΔP = 2 Pa (Change in pressure)
- ΔV = 3 m³ (Change in volume)
- V = 4 m³ (Original volume)
Result: B = -2.6666667 Pa
Where this formula is listed
- Mechanics formulas, under Dynamics, alongside Newton's Second Law, Weight, Friction Force, Drag Force and Terminal Velocity.
- In the mechanics list it comes after Pressure and before Work.
- Mechanics formula sheet, one of 58 formulas printed with symbol keys and SI units.
- The full formula index, grouped by category and topic.
Common questions
What is the Bulk Modulus formula?
Bulk Modulus is written B = −ΔP/(ΔV/V). Bulk modulus measures a material's resistance to uniform compression. It belongs to Mechanics, under Dynamics.
What are the units in B = −ΔP/(ΔV/V)?
In SI units, B is bulk modulus, measured in N/m²; ΔP is change in pressure, measured in N/m²; ΔV is change in volume, measured in m³; V is original volume, measured in m³.
How is the Bulk Modulus formula derived?
B = -V(dP/dV). The negative sign ensures B is positive since ΔV is negative for positive ΔP. The result is B = −ΔP/(ΔV/V).