• If you are citizen of an European Union member nation, you may not use this service unless you are at least 16 years old.

  • Work with all your cloud files (Drive, Dropbox, and Slack and Gmail attachments) and documents (Google Docs, Sheets, and Notion) in one place. Try Dokkio (from the makers of PBworks) for free. Now available on the web, Mac, Windows, and as a Chrome extension!

View
 

Homework Problems Physics 131: Section 4

Page history last edited by Joe Redish 1 year, 8 months ago

NEXUS/Physics > InstructorsHomePage > The Problem Collection > Homework Problems Physics 131

 

Homework Problems:

 

Interpretation of Problem Classification Icons 

 

 

 

4. Dynamics: Laws of motion

4.1.1 Physical content of Newton's Laws

Problem name  Type  Features  Threads  Use 
1. Hitting a bowling ball {*}  
 

2. The sliding pizza {*}

 
3. Forces in a car {*}
       
4. Cart on a ramp (LoggerPro) {*}
       
5. Comfort with forces
   
6. Forces on a swimming paramecium (MC) {*}      
7. A remote controlled car {*}        
         
         

4.1.2 Formulation of Newton's Laws as foothold principles 

Problem name  Type  Features  Threads  Use 
1. Kicking a car {*} 
     
2. Molly on the skateboard {* 

 

     
3.  Crawling amoebas {*}
     
 
4. The stooping hawk {*}

 

 
     
5. Pushing a carriage {*}
     
6. The book and the wall {*}
     
7. The farmer and the donkey {*}
   
8. Force on a woodpecker {*}
   

 

9. Trap-jaw ants {*} 
       
10. Pushing a box {*}    
11. Pushing two boxes {*}        
12. The Limits of Object Egotism     
13. The diving gannet  {*        
14. Splitting the concept of force       

15. Pushing a box - the details {*}

       
16. Conditions for Newton 3         
17. Why bother with Newton 1?       
      Pushing a block on a block - overview          
18. Pushing a block on a block - qualitative {*}        
19. Pushing a block on a block - symbols {*        
20. Nathan's train {*}        
21. Riding an elevator {*}        
22. Drawing consistent graphs {*}        
23. Toy models and Newton's Laws          
24. The ball and the juggler (D) {*}   (also 3.2.2.P10)       
25. Son of the ball and the juggler {*        
26. Space jam {*        

4.2.1 Spring forces

Problem name  Type  Features  Threads  Use 
1. Atomic force microscope 
 
   

2. The spring of DNA -- FBD {*}
 
     

3. Hooke's law vs DNA {*}

   
   
4. Stretching two springs {*}    
5. The nature of Hooke's Law      

6. Stretching multiple springs - toy model of a muscle {*}

6A. Stretching multiple springs - toy model of a normal force {*}

   
         
         

4.2.2 Resistive forces

Problem name  Type  Features  Threads  Use 
1. Propelling a paramecium Part 1: Equations {*}        
2. Propelling a paramecium Part 2: Estimations {*}        
3. Propelling a paramecium  Part 3: Calculations (Excel)        
4. The flying squirrel and the water flea {*}
4a. The flying squirrel and the water flea (ext) 
       
5. Propelling a paramecium: Overview {*}        
6. Pushing a block on a block - quantitative  {*}        
7. Falling coffee filters {*        
8. Ball falling in oil {*}        
9. Krakatoa         

4.2.3 Gravitational force

Problem name  Type  Features  Threads  Use 
1. Comparing a light and a heavy object        (2 versions)
 
2. Free-fall acceleration {*}    
3. Rolling up and down {*} (also 3.1.4.P5)      
4. Balls up! {*}        
5. Are you OK to drive? {*}        
6. The faster fall {*}        
7.        
8.        
9.        

4.2.4 Electric forces

Problem name  Type  Features  Threads  Use 

1. Forces between charges {*}

   
2. With a grain of salt {*}
 
   
3. Electric field hockey (PhET) {*}  
       
4. Analyzing dipoles {*}
 
     
5. Counting charges {*} 
     
6. The content in Coulomb's law {*} 
   
7. Water coat forces {*} 
 

    
8. Estimating charge {*}
   
8a. Estimating the charge on DNA {*}
   
 
8b. But it's just a leetle bit different  {*}      
9. PIP2 cluster stability {*}
     
10. Hydrogen bonding I
       
11. Effect of molecular shape on electric forces {*}
       
12. Molecular E-forces  
 
13. Three-charge problems       
14. Oil-water electric forces I  {*}         
15. The Millikan oil drop experiment (also 8.2.P5)          
16. Repelling pith balls  {*}        
17. Electric forces on charges {*}        
18. Forces between a charge and a dipole {*}        
19. Forces between dipoles {*}        
20. Charge in the CGS system        
21. Force between a charge and a dipole        
22.        
23.        

4.3. Coherent vs. random motion

4.3.1 Linear momentum

Problem name  Type  Features  Threads  Use 

1. Taking Cyrano to the moon {*}

     
2. Break a leg (Not!) {*}
     
3. Momentum conservation in subsystems {*}
     

4, Molecular collisions: 1 {*}

   
 

5. Molecular collisions 2 {*}

     (2 versions)

6. Molecular collisions 3

     
 
7. Carts and graphs {*}      
8. Colliding carts {*}      
9. Hitting the wall       
  
10. Closing the door {*}        
11. When is momentum conserved? {*        
         

4.3.2 The role of randomness

Problem name  Type  Features  Threads  Use 
1. Random vs coherent motion        
2. Random or not, here I come         
2A. Random or not, here I come (MC version) {*}      
3. How many ions? (also 2.1.4.P13) {*}    
4. Analyzing tradeoffs in mechanisms for moving       
         
         
         

4.3.3 Diffusion and random walks

Problem name  Type  Features  Threads  Use 
1. Diffusion in time and space
   
 
1A. >Diffusion in time and space {*}
   
2. Diffusion and viscosity {*}
 
3. Cell polarization and activation
   
4. Diffusion and slime molds {*}
     
5. Random vs coherent motion (Listeria)
     
6. Growing root tips
       
7. Jittery cells
8. Diffusion in capillaries {*}  
9. Relay cells
       

10. Molarity and number density {*}

       

11. Molarity and diffusion

     

12. Molarity, density, and diffusion {*}

     
13. Signaling across a synapse        
14. Diffusion down an axon        
15. Diffusion through an ion channel {*}       
16. The Diffusion Spread Equation {*        

 

Comments (0)

You don't have permission to comment on this page.