What This Document Is
This document contains practice problems and worked solutions for Exam Two of Purdue University’s Modern Mechanics (PHYS 17200) course, specifically from the Summer 2021 iteration. It focuses on applying energy principles and understanding work done by forces in various physical scenarios.
Why This Document Matters
This practice exam is designed for students currently enrolled in PHYS 17200. It serves as a crucial preparation tool for assessing understanding of key concepts related to work, energy, and their application to systems like orbiting comets, Ferris wheels, and interacting blocks. Utilizing this resource allows students to identify areas needing further review before the actual exam.
Common Limitations or Challenges
This document provides *practice* solutions, meaning it demonstrates how to approach problems similar to those expected on the exam. It does not replace lectures, textbook readings, or a comprehensive understanding of the underlying physics principles. It also represents a specific exam from a past semester and may not perfectly reflect the content or difficulty of future exams.
What This Document Provides
The full document includes three practice problems with detailed solutions:
* Problem 1: Determining the sign of work done by a star on a comet at different points in its orbit.
* Problem 2: Calculating the work done by the seat of a Ferris wheel on a rider moving between two points.
* Problem 3: Analyzing the translational kinetic energy of a box and identifying the interaction responsible for that energy.
This preview only provides a glimpse of the problems and the *approach* to solving them. The complete solutions, including detailed explanations and reasoning, are found in the full document. It does *not* include all problems from the full exam.
