Question

The two thigh bone each of cross section area 10 cm square support upper part of human body of mass 40 kg . What is average pressure sustained by the femurs

Answer 1

average pressure is 400000 Nm^2 ...hope it helps..

Answer 2

Answer:

Total Cross - Sectional area of the Femurs is :-

$A = 2 \times 10 \: {cm}^{2} = 20 \times {10}^{ - 4} {m}^{2} .$

The Force acting on them is F = 40 KG wt= 400 N.

(taking g = $10 \: m \: {s}^{ - 2}$).

This Force is acting vertically down and hence normally on the femurs. Thus , the average pressure is :-

$</p><p>P _{av} = \frac{</p><p> F }{A} = 2 \times {10}^{5} N {m}^{ - 2}$