1 A large stone block is to be part of a harbour wall. The block is supported beneath the surface of

the sea by a cable from a crane. Fig. 2.1 shows the block with its top face a distance h beneath the

surface of the sea

cable

peech

surface of sea

nt

block

ЭХ

18

ton

Fig. 2.1

ng

The force acting downwards on the top face of the block, due to the atmosphere and the depth h

of water, is 3.5 X 10^N.

es

(a) The top face of the block has an area of 0.25 m2

er

(1) Calculate the pressure on the top face of the block,

Media

nature

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