Figure 10.29 in your textbook is an energy bar chart for a mountain cli supplies up a slope. Suppose, instead, she uses the rope to lower the Which of the bars of the chart will be negative?
Figure 10.29 in your textbook is an energy bar chart for a mountain cli supplies up a slope. Suppose, instead, she uses the rope to lower the Which of the bars of the chart will be negative?
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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![**Title:** Understanding Energy Bar Charts in Mountain Climbing Scenarios
**Text:**
*Figure 10.29 in your textbook is an energy bar chart for a mountain climber pulling a bag of supplies up a slope. Suppose, instead, she uses the rope to lower the bag down the slope. Which of the bars of the chart will be negative?*
**Select all that apply:**
- [ ] \( K_i \)
- [ ] \( K_f \)
- [ ] \( U_i \)
- [ ] \( U_f \)
- [ ] \( W_{\text{ext}} \)
- [ ] \( \Delta E_{\text{th}} \)
**Explanation:**
In this scenario, we are analyzing the energy components involved when a mountain climber lowers a bag down a slope with a rope. An energy bar chart helps visualize different forms of energy (like kinetic and potential energy) and work done by external forces, showing increases or decreases as bars on a chart.
- \( K_i \) and \( K_f \): Initial and final kinetic energy. These indicate how the motion energy changes.
- \( U_i \) and \( U_f \): Initial and final potential energy. These relate to the height difference when the climber lowers the bag, which can decrease potential energy.
- \( W_{\text{ext}} \): Work done by external forces. This can decrease if the work is done against gravity.
- \( \Delta E_{\text{th}} \): Change in thermal energy. This comes from friction and can increase, though not typically negative.
When lowering the bag, gravitational potential energy (\( U \)) is likely to decrease, so \( U_f \) might be negative in relative terms, depending on the system’s energy accounting method.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F726affd8-d374-453a-83e1-8f2ca39cc059%2F31c4d260-41d1-47cf-9753-f7a8cea7aca9%2F401xs5l_processed.jpeg&w=3840&q=75)
Transcribed Image Text:**Title:** Understanding Energy Bar Charts in Mountain Climbing Scenarios
**Text:**
*Figure 10.29 in your textbook is an energy bar chart for a mountain climber pulling a bag of supplies up a slope. Suppose, instead, she uses the rope to lower the bag down the slope. Which of the bars of the chart will be negative?*
**Select all that apply:**
- [ ] \( K_i \)
- [ ] \( K_f \)
- [ ] \( U_i \)
- [ ] \( U_f \)
- [ ] \( W_{\text{ext}} \)
- [ ] \( \Delta E_{\text{th}} \)
**Explanation:**
In this scenario, we are analyzing the energy components involved when a mountain climber lowers a bag down a slope with a rope. An energy bar chart helps visualize different forms of energy (like kinetic and potential energy) and work done by external forces, showing increases or decreases as bars on a chart.
- \( K_i \) and \( K_f \): Initial and final kinetic energy. These indicate how the motion energy changes.
- \( U_i \) and \( U_f \): Initial and final potential energy. These relate to the height difference when the climber lowers the bag, which can decrease potential energy.
- \( W_{\text{ext}} \): Work done by external forces. This can decrease if the work is done against gravity.
- \( \Delta E_{\text{th}} \): Change in thermal energy. This comes from friction and can increase, though not typically negative.
When lowering the bag, gravitational potential energy (\( U \)) is likely to decrease, so \( U_f \) might be negative in relative terms, depending on the system’s energy accounting method.

Transcribed Image Text:The image displays a bar chart representing an energy conservation equation in physics. The equation is broken down as follows:
- The left side of the equation shows the initial energies and work done:
1. \( K_i \) (initial kinetic energy) - represented by a small green bar.
2. \( U_i \) (initial potential energy) - represented by a tiny blue bar, nearly at zero.
3. \( W_{ext} \) (external work done) - represented by a tall purple bar.
- The right side of the equation shows the final energies:
1. \( K_f \) (final kinetic energy) - represented by a tall blue bar.
2. \( U_f \) (final potential energy) - represented by a small green bar, similar in size to \( K_i \).
3. \( \Delta E_{th} \) (change in thermal energy) - represented by a medium-sized orange bar.
The equation demonstrates the principle of energy conservation, illustrating how initial energies and work impact the final energy states.
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