If $p_{1}$ is the vertical intensity of pressure at a depth h on a block of earth weighing $ω$ per unit volume and the angle of repose $ϕ$ , the lateral intensity of pressure $p_{2}$ is

- 1
  
  $\frac{ω h (1 - \cos ϕ)}{(1 + \sin ϕ)}$
- 2
  
  $\frac{ω h (1 - \sin ϕ)}{(1 + \sin ϕ)}$
- 3
  
  $\frac{ω h (1 - \tan ϕ)}{(1 + \tan ϕ)}$
- 4
  
  $\frac{ω (1 - \sin ϕ)}{h (1 + \sin ϕ)}$

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