A box of mass 40kg has a base of area 10m2
.Calculate the pressure exerted by it on the
ground (Use 1kg-f=10N).
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Answer:
Exact: 39.2 Pa OR 39.2 N/m²
Approximate: 40 Pa or 40 N/m²
Explanation:
Mass = 40 Kg
Area = 10 m²
Weight = Force = m*g (mass * acceleration by gravity) = 40 * 9.8 (On Earth)
= 392 N
Pressure = Force / Area
= 392 / 10
= 39.2 Pa OR 39.2 N/m²
* 'g' can be taken as 10 if it is told to take an approximate value. 9.8 is the exact value.
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