Figure 17 shows a crane lifting a concrete block from the bottom of a deep pool of water - Edexcel - GCSE Physics - Question 9 - 2019 - Paper 1

To find the area of the top surface of the block, we can use the relationship between pressure, force, and area which is given by the formula:

$P = \frac{F}{A}$

Where:

• P is the pressure (66000 Pa)
• F is the force (41000 N)
• A is the area.

Rearranging the formula gives:

$A = \frac{F}{P}$

Substituting in the values:

$A = \frac{41000 \, \text{N}}{66000 \, \text{Pa}} = 0.6212 \, \text{m}^2$

Thus, the area of the top surface of the block is approximately 0.62 m².