8-17. If the coefficient of static friction between the rear wheels of the tractor and the ground is μs = 0.6, determine if the rear wheels slip or the front wheels lift off the ground as the engine provides a torque M to the rear wheels. What is the torque needed to cause the motion? The front wheels are free to roll. The tractor weighs 2500 lb and has a center of gravity at G.

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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**Problem 8-17:**

If the coefficient of static friction between the rear wheels of the tractor and the ground is \( \mu_s = 0.6 \), determine if the rear wheels slip or the front wheels lift off the ground as the engine provides a torque \( M \) to the rear wheels. What is the torque needed to cause the motion? The front wheels are free to roll. The tractor weighs 2500 lb and has a center of gravity at \( G \).

**Diagram Explanation:**

The image shows a tractor with the following labeled elements:

- The center of gravity \( G \) is marked above the rear wheel, indicating the overall balance point of the tractor.
- The tractor is pulling a chain attached to a stump.
- There are measurements indicating distances:
  - The distance \( A \) from the front wheels to the center of gravity is labeled as 5 ft.
  - The distance \( B \) from the center of gravity to the rear wheels is labeled as 3 ft.
  - Another measurement from the rear axle \( O \) to the point where the chain is attached is labeled as 2 ft (both horizontally and vertically).
  
The image illustrates the scenario described in Problem 8-17, with a person operating the tractor.
Transcribed Image Text:**Problem 8-17:** If the coefficient of static friction between the rear wheels of the tractor and the ground is \( \mu_s = 0.6 \), determine if the rear wheels slip or the front wheels lift off the ground as the engine provides a torque \( M \) to the rear wheels. What is the torque needed to cause the motion? The front wheels are free to roll. The tractor weighs 2500 lb and has a center of gravity at \( G \). **Diagram Explanation:** The image shows a tractor with the following labeled elements: - The center of gravity \( G \) is marked above the rear wheel, indicating the overall balance point of the tractor. - The tractor is pulling a chain attached to a stump. - There are measurements indicating distances: - The distance \( A \) from the front wheels to the center of gravity is labeled as 5 ft. - The distance \( B \) from the center of gravity to the rear wheels is labeled as 3 ft. - Another measurement from the rear axle \( O \) to the point where the chain is attached is labeled as 2 ft (both horizontally and vertically). The image illustrates the scenario described in Problem 8-17, with a person operating the tractor.
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