Force P acts along line AB as shown in the figure. (a) Knowing that the magnitude of the moment of P about line CO is 540 N·m, determine the magnitude of the force P. (b) Express the moment of P about line CO as a Cartesian vector. (c) Find the magnitude of the moment of P about point C. (d) Find the magnitude of the moment of P about point A. P 12 m 15 m 9 m A

Elements Of Electromagnetics
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### Analysis of Moment of Force in 3D Space

#### Problem Statement

**Force P** acts along line **AB** as shown in the figure below.

1. Knowing that the magnitude of the moment of **P** about line **CO** is 540 N·m, determine the magnitude of the force **P**.
2. Express the moment of **P** about line **CO** as a Cartesian vector.
3. Find the magnitude of the moment of **P** about point **C**.
4. Find the magnitude of the moment of **P** about point **A**.

#### Diagram Description

The diagram consists of a rectangular prism with a coordinate system labeled as **x**, **y**, and **z**. The points **O**, **A**, **B**, and **C** are located at:
- **O (0, 0, 0)**
- **A (9 m, 0, 0)**
- **B (0, 15 m, 0)**
- **C (9 m, 15 m, 12 m)**

The force **P** acts along the line segment **AB**. The line **CO** is a diagonal passing from point **C** to point **O**.

#### Diagram Explanation

In the provided diagram:
- A rectangular prism is shown with its base along the **xy-plane** and extends vertically along the **z-axis**.
- Points are labeled as follows:
  - **O** is the origin.
  - **A** is along the **x-axis** at 9 meters.
  - **B** is along the **y-axis** at 15 meters.
  - **C** is diagonally opposite **O** on the top face at coordinates **(9 m, 15 m, 12 m)**.
- **Force P** is shown acting along the line **AB** directed from point **A** to point **B**.
- Line **CO** is highlighted between points **C** and **O**.

This setup helps define the relative positions and directions needed to solve for the magnitude of the force, and moments about specified points and lines in three-dimensional space.
Transcribed Image Text:### Analysis of Moment of Force in 3D Space #### Problem Statement **Force P** acts along line **AB** as shown in the figure below. 1. Knowing that the magnitude of the moment of **P** about line **CO** is 540 N·m, determine the magnitude of the force **P**. 2. Express the moment of **P** about line **CO** as a Cartesian vector. 3. Find the magnitude of the moment of **P** about point **C**. 4. Find the magnitude of the moment of **P** about point **A**. #### Diagram Description The diagram consists of a rectangular prism with a coordinate system labeled as **x**, **y**, and **z**. The points **O**, **A**, **B**, and **C** are located at: - **O (0, 0, 0)** - **A (9 m, 0, 0)** - **B (0, 15 m, 0)** - **C (9 m, 15 m, 12 m)** The force **P** acts along the line segment **AB**. The line **CO** is a diagonal passing from point **C** to point **O**. #### Diagram Explanation In the provided diagram: - A rectangular prism is shown with its base along the **xy-plane** and extends vertically along the **z-axis**. - Points are labeled as follows: - **O** is the origin. - **A** is along the **x-axis** at 9 meters. - **B** is along the **y-axis** at 15 meters. - **C** is diagonally opposite **O** on the top face at coordinates **(9 m, 15 m, 12 m)**. - **Force P** is shown acting along the line **AB** directed from point **A** to point **B**. - Line **CO** is highlighted between points **C** and **O**. This setup helps define the relative positions and directions needed to solve for the magnitude of the force, and moments about specified points and lines in three-dimensional space.
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