The boom of a crane extends from its base at point O to its tip at point Q, as shown in the figure below. A three-dimensional coordinate system is given in this figure with coordinates for both points of O = (0,0,0) and Q = (-2, 10, 10) ft. A force with a magnitude of 10.5 kip is applied at the tip of the boom by a cable that extends from point Q to point P in the x-y plane, which has coordinates P = (9,6, 0) ft. Determine the following quantities:

Elements Of Electromagnetics
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**Crane Force and Moment Analysis**

The boom of a crane extends from its base at point \( O \) to its tip at point \( Q \), as illustrated in the figure. The figure displays a three-dimensional coordinate system with coordinates for \( O = (0, 0, 0) \) and \( Q = (-2, 10, 10) \) feet. A force \( \mathbf{F} \) with a magnitude of 10.5 kip is applied at the tip of the boom by a cable that extends from point \( Q \) to point \( P \) in the x–y plane, with coordinates \( P = (9, 6, 0) \) feet.

### Diagram Explanation:
- **Axes**: The diagram shows a three-dimensional coordinate system with \( x \), \( y \), and \( z \) axes intersecting at point \( O \).
- **Boom**: The crane's boom is represented as a line extending from \( O \) to \( Q \).
- **Force \(\mathbf{F}\)**: Illustrated as a vector applied at point \( Q \), directed along the cable towards point \( P \).

### Problem Requirements:
Determine the following quantities:

**(a) The force \(\mathbf{F}\) as a Cartesian vector:**
\[ 
\mathbf{F} = \text{number} \, \mathbf{i} + \text{number} \, \mathbf{j} + \text{number} \, \mathbf{k} \, \text{kip}
\]

**(b) The moment \(\mathbf{M}_O\) due to force \(\mathbf{F}\) about point \( O \):**
\[ 
\mathbf{M}_O = \text{number} \, \mathbf{i} + \text{number} \, \mathbf{j} + \text{number} \, \mathbf{k} \, \text{kip} \cdot \text{ft}
\]

**(c) The magnitude of moment \(\mathbf{M}_O\):**
\[ 
M_O = \text{number} \, \text{kip} \cdot \text{ft}
\]
Transcribed Image Text:**Crane Force and Moment Analysis** The boom of a crane extends from its base at point \( O \) to its tip at point \( Q \), as illustrated in the figure. The figure displays a three-dimensional coordinate system with coordinates for \( O = (0, 0, 0) \) and \( Q = (-2, 10, 10) \) feet. A force \( \mathbf{F} \) with a magnitude of 10.5 kip is applied at the tip of the boom by a cable that extends from point \( Q \) to point \( P \) in the x–y plane, with coordinates \( P = (9, 6, 0) \) feet. ### Diagram Explanation: - **Axes**: The diagram shows a three-dimensional coordinate system with \( x \), \( y \), and \( z \) axes intersecting at point \( O \). - **Boom**: The crane's boom is represented as a line extending from \( O \) to \( Q \). - **Force \(\mathbf{F}\)**: Illustrated as a vector applied at point \( Q \), directed along the cable towards point \( P \). ### Problem Requirements: Determine the following quantities: **(a) The force \(\mathbf{F}\) as a Cartesian vector:** \[ \mathbf{F} = \text{number} \, \mathbf{i} + \text{number} \, \mathbf{j} + \text{number} \, \mathbf{k} \, \text{kip} \] **(b) The moment \(\mathbf{M}_O\) due to force \(\mathbf{F}\) about point \( O \):** \[ \mathbf{M}_O = \text{number} \, \mathbf{i} + \text{number} \, \mathbf{j} + \text{number} \, \mathbf{k} \, \text{kip} \cdot \text{ft} \] **(c) The magnitude of moment \(\mathbf{M}_O\):** \[ M_O = \text{number} \, \text{kip} \cdot \text{ft} \]
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