A refrence frame attached to the earth

Options

A. is an inertial frame by definition
B. cannotbe an inertial frame because the earth is revolving around the sun
C. is an inertial frame because Newton's lawa are applicable in this frame
D. cannot be an inertial drame because the earth is rotating about its axis.

Answer

To determine whether the reference frame attached to the Earth is inertial or non-inertial, we can follow these steps:

### Step 1: Define Inertial and Non-Inertial Frames
An **inertial frame** is one in which an object either remains at rest or moves at a constant velocity unless acted upon by a net external force. A **non-inertial frame**, on the other hand, is one that is accelerating, which means that objects within it may appear to experience fictitious forces.

### Step 2: Analyze Earth's Motion
The Earth is not stationary; it is both:
- **Rotating** on its own axis (which takes about 24 hours to complete one rotation).
- **Revolving** around the Sun (which takes about 365.25 days to complete one orbit).

### Step 3: Determine the Effects of Earth's Motion
Because the Earth is rotating and revolving, it is undergoing acceleration:
- The rotation of the Earth creates a centrifugal force that affects objects on its surface.
- The revolution around the Sun also contributes to the acceleration of the Earth’s reference frame.

### Step 4: Conclusion
Since the Earth is both rotating and revolving, it is an accelerating frame of reference. Therefore, the reference frame attached to the Earth is a **non-inertial frame**.

### Final Answer
The reference frame attached to the Earth is a **non-inertial frame** due to its rotation and revolution.

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