**Tactics Box 5.2: Identifying Forces**1. **Identify the object of interest.** This is the object whose motion you wish to study.2. **Draw a picture of the situation.** Show the object of interest and all other objects—such as ropes, springs, or surfaces—that touch it.3. **Draw a closed curve around the object.** Only the object of interest is inside the curve; everything else is outside.4. **Locate every point on the boundary of this curve where other objects touch the object of interest.** These are the points where contact forces are exerted on the object.5. **Name and label each contact force acting on the object.** There is at least one force at each point of contact; there may be more than one. When necessary, use subscripts to distinguish forces of the same type.6. **Name and label each long-range force acting on the object.** For now, the only long-range force is the gravitational force.---**Apply these steps to the following problem:** A crate is pulled up a rough inclined wood board by a tow rope. Identify the forces on the crate. (See Figure 1)---### Part A**Which of the following objects are of interest?***Check all that apply.*- [ ] rope- [ ] crate- [ ] earth- [ ] wood board **Learning Goal:**The first basic step in solving force and motion problems generally involves identifying all of the forces acting on an object. This tactics box provides a step-by-step method for identifying each force in a problem.**Figure Explanation:**The figure illustrates a block on an inclined plane. The block is shown with a series of horizontal lines, suggesting it is stacked. A rope or chain is attached to the top of the block, indicating a force that could be pulling the block along the incline. The inclined plane is slanted, which shows the effect of gravitational force acting on the block along the plane. This setup demonstrates the concept of forces acting on an object on an inclined surface, which is a common scenario in physics problems related to friction, gravity, tension, and normal force.

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Description: **Tactics Box 5.2: Identifying Forces**1. **Identify the object of interest.** This is the object whose motion you wish to study.2. **Draw a picture of the situation.** Show the object of interest and all other objects—such as ropes, springs, or sur

This is the problem of motion of object in inclined plane.

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Apply these steps to the following problem: A crate is pulled up a rough inclined wood board by Part A Which of the following objects are of interest? Check all that apply. rope crate earth wood board

Apply these steps to the following problem: A crate is pulled up a rough inclined wood board by Part A Which of the following objects are of interest? Check all that apply. rope crate earth wood board

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ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

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Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Newton's First Law of Motion

If a very smooth ball is rolled down an inclined surface with zero friction, the ball will continue to roll indefinitely for an infinite time, in an attempt to reach to the same height on the opposite hill!

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**Tactics Box 5.2: Identifying Forces**

1. **Identify the object of interest.** This is the object whose motion you wish to study.
2. **Draw a picture of the situation.** Show the object of interest and all other objects—such as ropes, springs, or surfaces—that touch it.
3. **Draw a closed curve around the object.** Only the object of interest is inside the curve; everything else is outside.
4. **Locate every point on the boundary of this curve where other objects touch the object of interest.** These are the points where contact forces are exerted on the object.
5. **Name and label each contact force acting on the object.** There is at least one force at each point of contact; there may be more than one. When necessary, use subscripts to distinguish forces of the same type.
6. **Name and label each long-range force acting on the object.** For now, the only long-range force is the gravitational force.

---

**Apply these steps to the following problem:** A crate is pulled up a rough inclined wood board by a tow rope. Identify the forces on the crate. (See Figure 1)

---

### Part A

**Which of the following objects are of interest?**

*Check all that apply.*

- [ ] rope
- [ ] crate
- [ ] earth
- [ ] wood board

**Learning Goal:**
The first basic step in solving force and motion problems generally involves identifying all of the forces acting on an object. This tactics box provides a step-by-step method for identifying each force in a problem.

**Figure Explanation:**
The figure illustrates a block on an inclined plane. The block is shown with a series of horizontal lines, suggesting it is stacked. A rope or chain is attached to the top of the block, indicating a force that could be pulling the block along the incline. The inclined plane is slanted, which shows the effect of gravitational force acting on the block along the plane. This setup demonstrates the concept of forces acting on an object on an inclined surface, which is a common scenario in physics problems related to friction, gravity, tension, and normal force.

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