A man exerts a pressure of 2.8 x 103Nm-2 on the ground and has 4 x 10-2m2 of his feet in contact with the ground. The weight of the man is
Question 1 Report
A man exerts a pressure of 2.8 x 103Nm-2 on the ground and has 4 x 10-2m2 of his feet in contact with the ground. The weight of the man is
Answer Details
The pressure exerted by a person is defined as the force per unit area, where force is the weight of the person and area is the surface area of the contact between the person and the ground. Here, the pressure exerted by the man is given as 2.8 x 10^3 Nm^-2 and the surface area of his feet in contact with the ground is 4 x 10^-2 m^2. To find the weight of the man, we can use the formula: pressure = force/area Rearranging the formula, we get: force = pressure x area Substituting the given values, we get: force = (2.8 x 10^3 Nm^-2) x (4 x 10^-2 m^2) = 112 N Therefore, the weight of the man is 112N. Hence, the answer is 112N.
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