Question

2. Rank the following in terms of increasing pressure:

A. A 10 kg object distributed on a square surface with dimensions 10 cm by 10 cm
B. A 20 kg object distributed on a square surface with dimensions 10 cm by 10 cm
C. A 30 kg object distributed on a square surface with dimensions 20 cm by 20 cm
D. A 40 kg object distributed on a square surface with dimensions 30 cm by 30 cm

Answer 1

C. A 30 kg object distributed on a square surface with dimensions 20 cm by 20 cm

D. A 40 kg object distributed on a square surface with dimensions 30 cm by 30 cm

p=f/a

30/400 ... 40/900

3/40 ... 4/90

looks like 3/40 is higher