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Place the square aluminum block with weight of 27 N and side length of 10 cm in the center of the horizontal table with an area of 0.5 m square (1) How much pressure does the desktop receive? (2) Now put a 1kg block on top of the aluminum block. What is the pressure of the aluminum block on the table? (g = 10N / kg)
(1) How much pressure does the desktop receive?
P1
=F/S
=G aluminum block / S
=27N/0.5m2
=54Pa
(2) Now put a 1kg block on top of the aluminum block. What is the pressure of the aluminum block on the table? (g = 10N / kg)
P2
=(g aluminum block + G material block) / S
=（27N+1kg*10N/kg）/0.5m2
=37N/0.5m2
=74Pa
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