Pressure in liquids and gases
2 marks · NormalA steel block has a mass of 24 kg and is in contact with the ground over an area of 0.06 m². Calculate the pressure it exerts on the ground. (Take ).
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4000 Pa (±100)
Common mistakes: Using mass instead of weight; Incorrect area units
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Marking points
M1 · 1 mark · Substitutes correctly (calculates weight and divides by area)
A1 · 1 mark · Correct evaluation: 4000 Pa (follow-through)
Worked solution
First, calculate the weight: N. Then, Pa.