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5. If Brook has a mass of 87 kg and applies a pressure of 9800 N/m2 when in bed. What is I
the surface area between Brook and the bed?

Respuesta :

SOFlA

We have,

  • Mass of brook = 87 kg
  • Pressure applied by it on the ground = 9800 N/m²

Now, we know that,

  • Pressure = Force/Area

We are provided with pressure applied butbwe need to calculate force;

  • F = ma
  • F = 87 × 9.8 { Accleration due to gravity }

Finally, just put all these values in pressure's formula:

  • P = F/A
  • 9800 = 87 × 9.8 / A
  • 98000/87 × 98 = A
  • 1000/87 = A
  • 11.49 = A
  • 11.5 m²(Approx) = A

Thus, the surface area between the brook and bed is 11.5 m².

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