A wooden block of dimensions 0.5mx0.6mx1.0m kept on the ground has a mass of 200kg. Calculate the maximum pressure acting on the ground.
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A block of wood is kept on table top. The mass of wooden block is 5 kg and its dimensions are 40cm×20cm×10cm. 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 dimensions (a) 20cm×10cm and (b) 40cm×20cm
A
(a) P=2440Nm−2 (b) P=610.5Nm−2
B
(a) P=2450Nm−2 (b) P=612.5Nm−2
C
(a) P=2460Nm−2 (b) P=618.5Nm−2
D
(a) P=2470Nm−2 (b) P=712.5Nm−2
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Correct option is B)
Mass of the wooden block, m=5kg
Thrust due to wooden block,
Mg=5kg×9.8ms−2=49N
(a) Surface area of 20cm×10cmsurface,
A=(20×10)cm2
=(0.2×0.1)m2
=0.02m2
P=Amg
P=0.0
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