- #1
Master Newton's Laws with These Challenging Practice Problems
- Thread starter the whizz
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- Laws Newtons Newtons laws
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SUMMARY
This discussion focuses on solving challenging practice problems related to Newton's Laws of Motion, specifically Newton's second law. The participants emphasize using Newton's second law to find acceleration and tension in systems involving multiple bodies, such as a penguin and a sled. Key strategies include writing equations for the sum of forces and considering static and kinetic friction. The urgency of completing these problems before a deadline is also highlighted.
PREREQUISITES- Understanding of Newton's Laws of Motion
- Familiarity with concepts of static and kinetic friction
- Ability to set up and solve equations of motion
- Basic knowledge of force diagrams
- Practice problems involving Newton's second law in multi-body systems
- Learn how to calculate static and kinetic friction coefficients
- Explore force diagram techniques for complex systems
- Study the relationship between acceleration and tension in connected objects
Students studying physics, educators teaching mechanics, and anyone preparing for exams involving Newton's Laws of Motion.
- #2
tiny-tim
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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?