Physics

Problem

Four objects exert the same downward force of

200\,\text{N}

but have different contact areas with the ground: (i) circular foot:

40\,\text{cm}^2

(ii) rectangular block:

100\,\text{cm}^2

(iii) bicycle tyre patch:

8\,\text{cm}^2

(iv) wooden plank side:

500\,\text{cm}^2

Arrange them in decreasing order of pressure exerted on the ground. a)

(iv) > (ii) > (i) > (iii)

(i) > (iii) > (ii) > (iv)

(iii) > (i) > (ii) > (iv)

(iii) > (ii) > (i) > (iv)