8 . A woman who weighs 465 N is leaning against a smooth vertical wall, as the d

Question

8. A woman who weighs 465 N is leaning against a smooth vertical wall, as the drawing shows. (a) Find the force FN (directed perpendicular to the wall) exerted on her shoulder by the wall.  (b) Find the vertical component of the force exerted on her shoes by the ground.
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A woman who weighs 465 N is leaning against a smooth vertical wall, as the drawing shows. (a) Find the force FN (directed perpendicular to the wall) exerted on her shoulder by the wall. (b) Find the vertical component of the force exerted on her shoes by the ground.

Explanation / Answer

b)vertical component exerted on her shoes by the ground= m*g = 465 N

a)equating torque about foot and head we get, 465*(1.1+0.4)*sin(60) = Fn * (1.1+0.4)*cos(60) ,

Fn = 8.5.404 N .

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