a rectangular concrete paving slab of weight 1200 N has sides of length 0.60 m and 0.40 m and a thickness of o.05 m. Calculate the pressure of the paving slab on the ground when it is: a) laid flat on a bed of sand, b) standing up on its short side
a) 1200 / (0.60 x 0.40) = 1200 / 0.24 = 5,000, b) 1200 / (0.40 x 0.05) = 1200 / 0.02 = 60,000
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