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Questions and Answers
What is the total force exerted by a body perpendicular to the surface in the downward direction known as?
What is the total force exerted by a body perpendicular to the surface in the downward direction known as?
What is the force acting perpendicular on unit area of the surface defined as?
What is the force acting perpendicular on unit area of the surface defined as?
If the mass of a rectangular block is 2 kg, what is the thrust on the surface of the ground due to the block's weight?
If the mass of a rectangular block is 2 kg, what is the thrust on the surface of the ground due to the block's weight?
Why can a sharp knife be more effective in cutting a bread than a blunt knife?
Why can a sharp knife be more effective in cutting a bread than a blunt knife?
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Why can a camel walk easily in a desert than a human being?
Why can a camel walk easily in a desert than a human being?
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Study Notes
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.
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Description
Test your knowledge of thrust and pressure with this quiz. Explore concepts such as railway track construction, weight distribution, knife sharpness, and tire width.
