Mass differs from weight because

Options

A. weight is a force whereas and mass is not a force.
B. the mass of an object is always more than its weight
C. mass can be expressed only in the metric system
D. there is no difference.

Explanation

**Step-by-Step Solution:**

1. **Understanding Mass and Weight:**
- Mass is a measure of the amount of matter in an object and is an intrinsic property of that object. It does not change regardless of location.
- Weight, on the other hand, is the force exerted by gravity on that mass. It is dependent on both the mass of the object and the acceleration due to gravity (g).

2. **Defining the Relationship:**
- The relationship between weight (W) and mass (m) can be expressed by the formula:
\[ W = m \cdot g \]
- Here, \(g\) is the acceleration due to gravity, which is approximately 9.8 m/s² on Earth.

3. **Analyzing the Options:**
- **Option 1:** "Weight is a force whereas mass is not a force."
- This is true. Weight is indeed a force (measured in Newtons), while mass is a scalar quantity (measured in kilograms).
- **Option 2:** "Mass of an object is always more than its weight."
- This is incorrect. Mass is not compared to weight in this way; they are different quantities.
- **Option 3:** "Mass can be expressed only in metric terms."
- This is also incorrect. Mass can be expressed in various units, including kilograms (kg), pounds (lbs), etc.
- **Option 4:** "There is no difference."
- This is false. There is a significant difference between mass and weight.

4. **Conclusion:**
- The correct answer is **Option 1**: "Weight is a force whereas mass is not a force."

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