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--- 183_projects:problem5a_fall2024 [2024/09/23 21:13] – hallstein
+++ 183_projects:problem5a_fall2024 [2025/02/06 14:19] (current) – hallstein
@@ Line 1: / Line 1: @@
 ==== Kick Off Questions ====
-  - An object is at rest on a flat, rough, horizontal surface. Compare the horizontal force needed to move the object to the horizontal force needed to keep the object moving with constant velocity once the object is moving.
+  - An object is at rest on a flat, rough, horizontal surface. Compare the horizontal force needed to move the object from rest to the horizontal force needed to keep the object moving with constant velocity once the object is moving.
-  - Consider an object place on a flat, rough surface making an angle relative to the horizontal of  $\theta$ . Draw a free body diagram showing all forces acting on this object.
+  - Consider an object placed on an incline. The incline is a flat, rough surface and is inclined at an angle of  $\theta$  relative to the horizontal. Draw a free body diagram showing all forces acting on this object.
   - In the previous question, what is the angle between the normal(perpendicular) to the incline and the gravitational force?
-====== Project 5: Part A: Escape from Korath Part 2 ======
+====== Project 4: Part B: Escape from Korath Part 2 ======
 <WRAP info>
-==== Project 5: Learning Goals ====
+==== Project 4: Learning Goals ====
   * Be able to analyze a body that is experiencing multiple forces and find its acceleration
@@ Line 23: / Line 23: @@
 <WRAP info>
-==== Project 5: Learning Concepts ====
+==== Project : Learning Concepts ====
   * Constant acceleration and kinematic equations
@@ Line 29: / Line 29: @@
   * Rotated Frames (Forces on an inclined plane)
   * Free body diagrams
+/*
   * Collisions
   * Momentum Conservation
   * Systems
+*/
 </WRAP>
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 {{183_projects:tech_diagram_c.jpg|}}
+====== Project 4: Part C: Escape from Korath Part 2 ======
+There are a couple of different approaches to solving the previous part of this problem. If you did not find coefficients of friction in the previous part do this now. Start with ramp, and work in variables only until you are ready to calculate your coefficient. Once you have done this, find the coefficient of friction in the tunnel (HINT: use the variable expression from the ramp here as a starting point). If in completing the previous part you did so but did not find an expression for the coefficient of friction exclusively in variables, redo it now and find an expression for the friction coefficient on the ramp in variable form then use this expression as a starting point for the friction coefficient in the tunnel.
-**Conceptual questions:**
+**Wrap up Questions:**
   - Does the frictional force depend on the mass of the object?  What about the contact area?  Why?
   - Is this problem mass-dependent?