Reading:

Cutnell and Johnson, Chapter 4.

Problems for Review:

Reviewing these problems gives you good exposure to this week's main topics, in practice. All solutions are posted on our website |http://www.cc.emory.edu/PHYSICS/Faculty/Benson/141/review.html|. Quantitative solutions are also in the Student Study Guide.

Conceptual:

MCAT review problems 5 and 6 (on website).

Quantitative:

Chapter 4, problems 13, 31, 49, 57, 75, 87, 91, 95.

Problems to Hand In:

Conceptual:

Use the following to answer questions 1--6:

1. The gravitational force on the ball is
   1. 100 kg up.
   2. 100 kg down.
   3. 1000 N up.
   4. 1000 N down.
   
   
2. The sum of forces exerted in the y-direction by ropes and at the junction is equal to
   1. 0 N
   2. 500 N up.
   3. 500 N down.
   4. 1000 N up.
   
   
3. The sum of all forces acting in the x direction is equal to
   1. 0 N.
   2. 500 N up.
   3. 500 N down.
   4. 100 N up.
   
   
4. The force exerted in the y-direction by ropes and is
   1. 
   2. 
   3. 
   4. 
   
   
5. The magnitude of the force exerted on the ball by rope 1 is
   1. 1000 N
   2. 2000 N
   3. 500 N
   4. 870 N
   
   
6. The magnitude of the force exerted on the ball by rope 2 is
   1. 1730 N
   2. 4210 N
   3. 2010 N
   4. 0 N

Quantitative I:

Complete these end-of-chapter problems (not questions!) from your textbook, submitting only your final circled choice for an answer.

Chapter 4.

12.

26.

34a.

34b.

38.

46a.

46b.

50.

Quantitative II:

Complete these end-of-chapter problems (not questions!) from your textbook. For these, you are expected to fully write up your solution. Summarize what information and variables are given in the problem statement, then state what equations and approach can be used to find the answer requested. DRAW A FREE BODY DIAGRAM! Provide any needed justification if the equation or approach is not universally valid. Derive the answer formally, being sure all your equalities have sensible left and right hand sides. Plug in numbers only in your last step. Show derivation of your units. Box your final answer, which should be in the form variable = number units (direction if needed), for a quantitative question.

Chapter 4: 37, 67, 72.

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