Thrust and Pressure Quiz

Forces and Pressure

• The total force exerted by a body perpendicular to the surface in the downward direction is known as thrust.
• Pressure is the force acting perpendicular on unit area of the surface.

Thrust and Weight

• The thrust on the surface of the ground due to the weight of a rectangular block is equal to its weight, which is given by the mass of the block multiplied by the acceleration due to gravity (g = 9.8 m/s²).
• For a 2 kg rectangular block, the thrust on the surface of the ground would be approximately 19.6 N.

Pressure and Surface Area

• A sharp knife is more effective in cutting a bread than a blunt knife because the pressure exerted by the sharp knife on the bread is greater due to its smaller surface area.
• The pressure exerted by a sharp knife is greater than that of a blunt knife, allowing it to cut more efficiently.

Adaptation and Environment

• A camel can walk easily in a desert than a human being because of its unique adaptations, such as broad, padded feet, which exert a lower pressure on the sand, allowing it to move more easily.
• The camel's adaptation to its desert environment enables it to walk more efficiently than a human being, who would sink into the sand due to the higher pressure exerted by their feet.