A lawn mower tractor pulls a large and heavy sled during a pulling game at a county fair. The force during the pull is monitored and recorded by instruments. The figure shows the force as a function of displacement. F (KN) 12 11 10 9 8 7 6 5 4 3 2 1 0 6 7 8 9 10 11 12 x (m) What was the total amount of work done by the tractor? 74.5 kJ 0 1 2 3 4 5 Incorrect. What was the average power of the tractor, if the pull lasted for 7.90 seconds? 9.43 W Incorrect.

College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
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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A lawn mower tractor pulls a large and heavy sled during a pulling game at a county fair. The force during the pull is monitored and recorded by instruments. The figure shows the force as a function of displacement.

### Diagram Explanation

The graph is a plot of force (F) against displacement (x). The x-axis represents displacement in meters (m), ranging from 0 to 12 meters. The y-axis represents force in kilonewtons (kN), ranging from 0 to 12 kN.

The plot displays a piecewise linear graph with the following key characteristics:
- The force increases from 0 kN to 12 kN as the displacement goes from 0 to 4 meters.
- The force remains constant at 12 kN from 4 to 5 meters.
- From 5 to 11 meters, the force decreases linearly from 12 kN to 0 kN.
- The force returns to 0 kN at 12 meters.

### Questions and Responses

1. **What was the total amount of work done by the tractor?**
   - User Input: 74.5 kJ
   - Feedback: Incorrect. (Additional feedback not provided in this transcription)

2. **What was the average power of the tractor, if the pull lasted for 7.90 seconds?**
   - User Input: 9.43 W
   - Feedback: Incorrect. (Additional feedback not provided in this transcription)
Transcribed Image Text:A lawn mower tractor pulls a large and heavy sled during a pulling game at a county fair. The force during the pull is monitored and recorded by instruments. The figure shows the force as a function of displacement. ### Diagram Explanation The graph is a plot of force (F) against displacement (x). The x-axis represents displacement in meters (m), ranging from 0 to 12 meters. The y-axis represents force in kilonewtons (kN), ranging from 0 to 12 kN. The plot displays a piecewise linear graph with the following key characteristics: - The force increases from 0 kN to 12 kN as the displacement goes from 0 to 4 meters. - The force remains constant at 12 kN from 4 to 5 meters. - From 5 to 11 meters, the force decreases linearly from 12 kN to 0 kN. - The force returns to 0 kN at 12 meters. ### Questions and Responses 1. **What was the total amount of work done by the tractor?** - User Input: 74.5 kJ - Feedback: Incorrect. (Additional feedback not provided in this transcription) 2. **What was the average power of the tractor, if the pull lasted for 7.90 seconds?** - User Input: 9.43 W - Feedback: Incorrect. (Additional feedback not provided in this transcription)
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