Rank the following in terms of increasing pressure: a. a 10 kg object distributed on a square surface with dimensions 10 cm by 10 cmb. 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;

In order of increasing pressure;

D < C < A <B

B, has the highest pressure while D. has the least pressure

Explanation;

Pressure = Force/ Area

10 N = 1 Kg

Therefore; for

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

Pressure = 200/100

               = 2 N/cm²

A .A 10 kg object distributed on a square surface with dimensions 10 cm by 10 cm.

Pressure = 100/100

               = 1 N/cm²

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

Pressure = 300/400

              = 0.75 N/cm²  

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

Pressure = 400/900

                = 4/9 N/cm²

answer: 2×10^-2kg

explanation: density= mass per volume

vol=mass/density

converting to s.i units we have;

3÷1000kg = 0.003

1.5÷100m = 0.15

0.003/0.15 = 0.02kg