Answer :
According to the question, the radius of the heel, r = d/2 = 0.005 m
And the mass of the lady (m) = 50 kg
We know that the expression for the Area of the heel can be written as –
A = πr2 = π (0.005)2
A = 7.85 × 10-5 m2
Expression for the Force on the floor due to the heel is given by –
F = mg = 50 × 9.8
F = 490 N
The pressure exerted by the heel on the floor:
Upon substituting values, we get –
P = 490 / 7.85 × 10-5
Therefore, P = Nm -2