a rectangular block with side 5cm*10cm*20cm is made of materials of 32.5g per centimeter cube, find the maximum pressure that exert when resting with one of the face on a horizontal surface​

Respuesta :

65Nm⁻²

Explanation:

Pressure is given by the formulae;

P = F/A  whereby;

P = pressure

F = force

A = area

For the sake of this question, we can replace F with ma because;

F = ma whereby

F = force

M = mass

A = acceleration (in this case due to gravity)

Therefore;

P = ma / A

The cuboid has three (faces) with different areas. Maximum pressure will be applied on the surface with the smallest area (which is 5cm * 10cm);

We will work with the mass in KGS & area in m²

P = 0.0325 * 10 / (0.05 * 0.1)

P = 0.325/0.005

P = 65Nm⁻²

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