- #1
Master Newton's Laws with These Challenging Practice Problems
- Thread starter the whizz
- Start date
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- Laws Newtons Newtons laws
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Homework Help Overview
The discussion revolves around problems related to Newton's laws of motion, specifically focusing on scenarios involving a penguin and a sled. Participants express difficulty in initiating their problem-solving process and seek guidance on how to approach the problems effectively.
Discussion Character
- Exploratory, Assumption checking, Problem interpretation
Approaches and Questions Raised
- Participants discuss using Newton's second law to find acceleration and tension in the context of the problems. There is mention of writing equations for the sum of forces and considering the motion of the penguin and sled as a single system. Questions arise regarding the maximum static friction and the relationship between kinetic friction and acceleration.
Discussion Status
Some participants have offered initial approaches to the problems, suggesting the use of Newton's laws and the importance of analyzing forces. However, there is no explicit consensus on how to proceed, and multiple interpretations of the problems are being explored.
Contextual Notes
Participants indicate a time constraint, as the problems are due soon, and there is a mention of technical difficulties in sharing work. This may affect the depth of the discussion.
- #2
tiny-tim
Science Advisor
Homework Helper
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Welcome to PF!
Hi the whizz ! Welcome to PF!
Let's just do 1 and 2 first:
1. Use good ol' Newton's second law for penguin-and-sled together to find the acceleration.
Then use Newton's second law for the penguin only.
2. The acceleration will be the same for all bodies (because the strings are always the same length).
So call the acceleration a, and start at the left-hand end by using Newton's second law on m1 to find T1.
the whizz said:
Hi the whizz ! Welcome to PF!
Let's just do 1 and 2 first:
1. Use good ol' Newton's second law for penguin-and-sled together to find the acceleration.
Then use Newton's second law for the penguin only.
2. The acceleration will be the same for all bodies (because the strings are always the same length).
So call the acceleration a, and start at the left-hand end by using Newton's second law on m1 to find T1.
- #3
the whizz
- 32
- 0
ok so basically what I am taught to do is...
take the diagram and write equations for the sum of all the forces in different directions.
add all equations to each other and solve for the unknown.
So in the first problem i want to figure out the equation of motion for the penguin and the slide as one first?
Then find the maximum static friction for the penguin.
The forces on both would be kinetic Friction would be equal to the M1A...
Once i get my scanner working i can post the work and hopefully can make some sense of it.
take the diagram and write equations for the sum of all the forces in different directions.
add all equations to each other and solve for the unknown.
So in the first problem i want to figure out the equation of motion for the penguin and the slide as one first?
Then find the maximum static friction for the penguin.
The forces on both would be kinetic Friction would be equal to the M1A...
Once i get my scanner working i can post the work and hopefully can make some sense of it.
- #4
the whizz
- 32
- 0
these are due tomorrow and I'm losing it...
anyone have aim or anything that can help me through this?
anyone have aim or anything that can help me through this?