QQuestionPhysics
QuestionPhysics
What are the units of mass and weight in the English system? Explain.
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Step 1:: In the English system, also known as the U.
S. customary system, mass is typically measured in units such as ounces (oz) and pounds (lb). [Mass]_{\text{English}} = \text{ounces (oz) or pounds (lb)}
Step 2:: Weight, on the other hand, is a force that depends on the mass of an object and the acceleration due to gravity.
In the English system, weight is also measured in pounds (lb), which can be a bit confusing since the same unit is used for both mass and weight. However, it's important to remember that they represent different physical quantities. [Weight]_{\text{English}} = \text{pounds (lb)}
Step 3:: To clarify the difference between mass and weight, consider the following formulas:
- For mass: m = \text{mass (English)} W = m \times a Since the acceleration due to gravity is approximately constant near the Earth's surface, the conversion between mass and weight in the English system can be simplified as follows: W_{\text{lb}} \approx 32.17405 \times m_{\text{lb}}
Step 4:: It's important to note that while mass and weight are measured in similar units in the English system, they are fundamentally different physical quantities.
Mass is a measure of the amount of matter in an object, while weight is the force exerted on an object due to gravity.
Final Answer
The units of mass in the English system are ounces (oz) and pounds (lb), while the units of weight are pounds (lb). However, it's crucial to remember that mass and weight are different physical quantities, even though they share the same unit in the English system.
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