Year 12s: what will be the first way you research your future options? >>

pressure

a rectangular concrete paving slab of the weight of 1200N has sides of length 0.60m and 0.40 and a thickness of 0.05m. what is the pressure on it when it is laid flat on a bed of sand

Reply 1

uberteknik

Original post by ginger_ninja_1

a rectangular concrete paving slab of the weight of 1200N has sides of length 0.60m and 0.40 and a thickness of 0.05m. what is the pressure on it when it is laid flat on a bed of sand

How far have you got with this? Show your working and we can help from there.

To get you going:

Pressure (measured in Pascal's) = Force per unit Area.

Newton's are the derived SI unit of force acting on an object under the influence of Earths gravity.

Force (Newtons) = mass x gravitational acceleration

From above, you can calculate the mass of the concrete slab.

Finally, you need to calculate the surface area of the concrete slab (length x width) and use both the mass and surface area to substitute these values back into the pressure definition given at the start.

What answer did you get?