a workman lays a plank on the roof the plank has an area of 0.3 and a weight of 70 what is the maximum pressure under the plank when he is walking on it
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Given: A workman lays a plank on the roof. The plank has an area of 0.3 m^2 and a weight of 70 N.
To find: Maximum pressure under the plank when he is walking on it
Explanation: Area= 0.3 m^2
Force= Weight of the workman = 70 N
Now,Pressure (P) is the force applied perpendicular to the surface of an object per unit area over which that force is distributed.
Therefore, P = Force / Area
= 70/ 0.3
= 233.3 Pa
Therefore, the maximum pressure under the plank when the workman walks on it is 233.3 Pa.
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