A box is on a table. The area of the box in contact with the table is 1500 cm2. The pressure on the table is 28 newtons/m2. Work out the force exerted by the box on the table ? Give your answer correct to the nearest whole number.

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Answer 1 · 2018-06-16T20:36:29

#F ~~4 N#

Given: box on a table of area = #A = 1500 cm^2#. Pressure on the table #P = 28 N/m^2#. Find the force exerted.

#"Force" = "Pressure" xx "Area"#

The units of area must be converted to #m^2# since the given pressure is in #N/m^2#:

#1500 " "cm^2 xx (1 " "m^2)/(100^2 " "cm^2) = .15 " "m^2#

#F = 28 " "N/(cancel(m^2)) xx .15 cancel(m^2) = 4.2 N#