A block wood is kept on table top. The mass wooden block is $5 k g$ and its dimensions are $40 c m \times 20 c m \times 10 c m$ . Find the pressure exerted by the wooden block on the table top, if it is made to lie on the table top with its sides of dimension:
(a) $20 c m \times 10 c m$ and
(b) $40 c m \times 20 c m$

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Solution

pressure=force/area
(a) pressure= (5x9.8)/(0.2x0.1)=2450 pa
(b) pressure=(5x9.8)/ (0.4x0.2)=612.5 pa

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