Weight

Weight is the measure of how heavy an object is. It is the force exerted on an object due to gravity. The unit of weight is the Newton (N) in the metric system, and the pound (lb) in the imperial system.

Key Concepts:

1. Mass vs. Weight: Mass is the amount of matter in an object, while weight is the force exerted on an object due to gravity. Weight can change based on the gravitational pull, whereas mass remains constant.
2. Units of Weight: In the metric system, weight is measured in Newtons (N), while in the imperial system, it is measured in pounds (lb).
3. Measuring Weight: Weight is measured using a scale or a balance. It is important to use the appropriate units for measurement.

Formulas:

Weight (W) = Mass (m) x Acceleration due to gravity (g)

W = m x g

Study Guide:

Here are some key points to remember when studying weight:

• Understand the difference between mass and weight.
• Learn the units of weight in both the metric and imperial systems.
• Practice using the formula W = m x g to calculate weight.
• Understand the concept of gravitational acceleration and its effect on weight.

By understanding the concept of weight and practicing its calculations, you can gain a solid grasp of this important measurement in physics.