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Questions and Answers
What is the force applied per unit area called?
What is the force applied per unit area called?
- Gravity
- Pressure (correct)
- Tension
- Friction
A heavy object exerts more pressure on a surface because of its
A heavy object exerts more pressure on a surface because of its
- greater volume
- greater surface area
- greater speed
- greater weight (correct)
An object with a larger surface area in contact with a surface will exert
An object with a larger surface area in contact with a surface will exert
- less pressure (correct)
- more pressure
- equal pressure
- unknown pressure
What happens to the pressure of an object if its surface area is reduced?
What happens to the pressure of an object if its surface area is reduced?
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Which of the following is an example of force being applied over a small surface area?
Which of the following is an example of force being applied over a small surface area?
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Study Notes
Pressure
- Pressure is the force applied per unit area.
Factors Affecting Pressure
- The weight of an object affects the pressure it exerts on a surface, with heavier objects exerting more pressure.
- The surface area of an object in contact with a surface affects the pressure it exerts, with larger surface areas resulting in less pressure.
Effect of Surface Area on Pressure
- If the surface area of an object is reduced, the pressure it exerts on a surface will increase.
Examples of Force and Surface Area
- An example of force being applied over a small surface area is a stiletto heel, which exerts a large amount of pressure on a small area.
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