Body A in the figure weighs 110 N, and body B weighs 86 N. The coefficients of friction between A and the incline are μs = 0.48 and μk = 0.22. Angle θ is 50°. Let the positive direction of an x axis be up the incline. What is the acceleration of A if A is initially (a) at rest, (b) moving up the incline, and (c) moving down the incline?

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Chapter5: More Applications Of Newton’s Laws
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Body A in the figure weighs 110 N, and body B weighs 86 N. The coefficients of friction between A and the incline are μs = 0.48 and μk = 0.22. Angle θ is 50°. Let the
positive direction of an x axis be up the incline. What is the acceleration of A if A is initially (a) at rest, (b) moving up the incline, and (c) moving down the incline?

**Inclined Plane and Pulley System**

**Diagram Explanation for Educational Purposes:**

The diagram illustrates a physics problem involving an inclined plane and a pulley system. Here are the details represented in the diagram:

1. **Objects Involved:**
   - **Object A:** This is a block situated on an inclined plane. The block is colored pink.
   - **Object B:** This is another block, colored purple, hanging freely in the air.

2. **Inclined Plane:**
   - The inclined plane is shown at an angle \( \theta \) to the horizontal ground. 

3. **Pulley System:**
   - A pulley is depicted at the top right of the inclined plane. 
   - The pulley is labeled as "Frictionless, massless pulley," indicating that there is no friction in the pulley and it does not contribute any mass to the system.

4. **Connection Between Objects:**
   - A rope is shown running over the pulley, connecting Object A and Object B.
   - This setup implies that the motion of one object (e.g., moving down the inclined plane) will affect the other's motion (e.g., rising or descending).

**Physics Concepts:**

This system is often used to study concepts such as:
- Newton’s laws of motion.
- Frictionless surfaces (ideal scenarios).
- Tension in the rope.
- Gravitational force components along and perpendicular to the inclined plane.
- Forces and their resultant acceleration on both objects.

This setup can be used to derive equations for the acceleration of the blocks and the tension in the rope considering the angle \( \theta \), masses of blocks A and B, and gravitational constant \( g \).
Transcribed Image Text:**Inclined Plane and Pulley System** **Diagram Explanation for Educational Purposes:** The diagram illustrates a physics problem involving an inclined plane and a pulley system. Here are the details represented in the diagram: 1. **Objects Involved:** - **Object A:** This is a block situated on an inclined plane. The block is colored pink. - **Object B:** This is another block, colored purple, hanging freely in the air. 2. **Inclined Plane:** - The inclined plane is shown at an angle \( \theta \) to the horizontal ground. 3. **Pulley System:** - A pulley is depicted at the top right of the inclined plane. - The pulley is labeled as "Frictionless, massless pulley," indicating that there is no friction in the pulley and it does not contribute any mass to the system. 4. **Connection Between Objects:** - A rope is shown running over the pulley, connecting Object A and Object B. - This setup implies that the motion of one object (e.g., moving down the inclined plane) will affect the other's motion (e.g., rising or descending). **Physics Concepts:** This system is often used to study concepts such as: - Newton’s laws of motion. - Frictionless surfaces (ideal scenarios). - Tension in the rope. - Gravitational force components along and perpendicular to the inclined plane. - Forces and their resultant acceleration on both objects. This setup can be used to derive equations for the acceleration of the blocks and the tension in the rope considering the angle \( \theta \), masses of blocks A and B, and gravitational constant \( g \).
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