derived units (pressure)

Question

The SI unit Pascal can be expressed dimensionally as?

RankGuru · Accepted Answer

1. **Definition of Pressure**: Presure is force per unit area ($P = F/A$).
2. **Unit**: $1$ Pascal (Pa) $= 1 	ext{ Newton} / 	ext{meter}^2$.
3. **Dimension of Force**: $[MLT^{-2}]$.
4. **Dimension of Area**: $[L^2]$.
5. **Calculation**:
   - $[P] = \frac{[MLT^{-2}]}{[L^2]}$
   - $[P] = [ML^{1-2}T^{-2}] = [ML^{-1}T^{-2}]$.
6. **Result**: The dimensional formula for pressure is **$[ML^{-1}T^{-2}]$**.

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derived units (pressure)

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