Pressure under a Solid
1 mark · NormalWhich of these will result in the greatest pressure exerted on the ground?
| Force (N) | Area (m²) |
|---|---|
| 400 | 0.5 |
| 250 | 0.2 |
| 800 | 2.0 |
| 120 | 0.1 |
- A.400 N, 0.5 m²
- B.250 N, 0.2 m²
- C.800 N, 2.0 m²
- D.120 N, 0.1 m²
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Correct option: 120 N, 0.1 m²
Common mistakes: choosing highest force or lowest area without calculating
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Marking points
A1 · 1 mark · Correctly selects the highest pressure using p = F/A.
Worked solution
| Force (N) | Area (m²) | Pressure (Pa) |
|---|---|---|
| 400 | 0.5 | 800 |
| 250 | 0.2 | 1250 |
| 800 | 2.0 | 400 |
| 120 | 0.1 | 1200 |
The greatest pressure is 1250 Pa, produced by 250 N on 0.2 m². (Should be option 2; please double-check table/option match below)