A circular surface area $200 c m^{2}$ is inclined to the x and y axes such that the unit vector normal to the surface is given by $n = 0.4 i + 0.3 j$ . If a force of 2000 kg acts on the x-axis, then the normal stress on the surface will be

- 1
  
  $10 k g / c m^{2}$
- 2
  
  $5 k g / c m^{2}$
- 3
  
  $4 k g / c m^{2}$
- 4
  
  $3 k g / c m^{2}$

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