A worker lifts an 80-kg crate using a pulley B as shown. The ideal pulley is attached to the beam AB which is fixed to the wall at A. Find the reactions at A.
A worker lifts an 80-kg crate using a pulley B as shown. The ideal pulley is attached to the beam AB which is fixed to the wall at A. Find the reactions at A.
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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A worker lifts an 80-kg crate using a pulley B as shown. The ideal pulley is attached to the beam AB which is fixed to the wall at A. Find the reactions at A.

Transcribed Image Text:The image is a diagram illustrating a three-dimensional mechanical framework involving a block and tackle system. Here's a detailed explanation:
### Diagram Components
1. **Block and Tackle**:
- Point A is fixed on a wall, where a pulley system starts.
- A horizontal beam extends from point A to point B.
2. **Pulley System**:
- The rope extends from point B, going diagonally to a point C where a person stands holding the rope.
- The rope also supports a crate or box (point D).
3. **Distances and Dimensions**:
- The horizontal distance from O to C (along the x-axis) is marked as 2.2 meters.
- The horizontal distance from O to B (along the y-axis) is 1.5 meters.
- The vertical height from O to D (along the z-axis) is 4.8 meters.
- The vertical distance from A to B is 1 meter above the crate.
4. **Coordinate System**:
- The coordinate system includes x, y, and z axes.
- The position O is a reference point on the ground.
This setup typically represents a real-world physics or engineering problem involving forces, tension, and vectors within the system. The problem would likely involve calculating forces exerted on the rope, analyzing equilibrium, or determining angles within the system.
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