The concepts of net force in a particular direction (thrust) and force per unit area (pressure) help explain these phenomena, as they relate to how force is distributed over an area.
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The effects of forces of the same magnitude are different on different areas because the pressure exerted by the force depends on the area over which it acts. Pressure is defined as thrust (force) per unit area. A larger area ...
When standing on loose sand, the thrust (or weight) is acting on a smaller area (the area of your feet), causing a greater impact on the sand. When lying down, the same thrust is distributed over a larger area (the ...
Thrust is the force acting on an object perpendicular to the surface.
Weight is the force acting vertically downwards due to gravity.
The concepts of net force in a particular direction (thrust) and force per unit area (pressure) help explain these phenomena, as they relate to how force is distributed over an area.
Cutting tools have sharp edges to concentrate the force applied over a smaller area, increasing the pressure and making it easier to cut through materials.
Trucks and motorbuses have much wider tyres to spread their weight over a larger area, reducing the pressure on the road surface and providing better stability and traction.
An army tank rests upon a continuous chain (tracks) to distribute its weight over a larger area, reducing the pressure on the ground and allowing it to move more easily over soft or uneven terrain.
A camel can run easily in a desert because its wide feet spread its weight over a larger area, reducing the pressure on the sand and preventing it from sinking.