Static and Kinetic Friction - Forces in MCAT Physics
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- Опубликовано: 13 июл 2024
- Leah4sci.com/Forces presents: Static and Kinetic Friction, what they are, equation, coefficient of friction with free body diagram, practice example of how to calculate on a flat surface (Forces in MCAT Physics series)
📺Watch Next: Introduction to Forces in MCAT Physics • Introduction to Forces...
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This video defines the forces of static and kinetic friction using real-life examples and logical explanations.
You’ll learn how to draw free body diagrams that incorporate friction in the horizontal plane to oppose an applied force, for both objects in motion and objects that are stationary on a flat surface.
You’ll also learn about the coefficient of static and kinetic friction, what it means for an object’s resistance to either move or slow down and how it fits into the equation for friction.
Finally, you’ll see me walk through a full-length practice problem that includes kinematic equations and several tips and tricks for solving similar problems using MCAT Math.
↪ Links & Resources Mentioned In This Video ↩
▸MCAT Forces Series + Cheat Sheet Leah4sci.com/Forces
▸MCAT Kinematics Series + Cheat Sheet Leah4sci.com/Kinematics
▸Choosing the Correct Kinematic Equation • MCAT Physics Kinematic...
▸MCAT Math Series + Cheat Sheet Leah4sci.com/MCATmath
▸Trick for Multiplying and Dividing by 10 • MCAT Math Vid 2 - Mult...
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⏱ In this video:
[0:16] Definition of Friction
[0:36] Static Friction
[4:03] Kinetic Friction
[5:46] The Coefficient of Friction
[8:30] Friction Equation Explained
[10:31] Practice Problem and Solution
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I was JUST doing a static friction problem on UWorld and came to YT to watch some more videos, and you just uploaded this 1hr ago?? Queen!!
Wow! Talk about perfect timing!! Hope it helped with your UWorld questions
Leah, always giving the best!🥰🥰
Thank you so much
Your videos are a blessing. I am so grateful to you for your teaching passion and generosity. Thank you.
You are very welcome, I'm so glad you're finding them helpful! Are you studying for the MCAT or physics class?
@@Leah4sciMCAT MCAT
Thx, It helped me a lot.
You're welcome!
lolz You lost me around 13:00 when deriving from other equations happened xD but I love the video super helpful
Thank you! This can be a complicated topic and sometimes requires multiple run-throughs for it to really sink in.
For help with questions like this and more, I recommend joining the MCAT Study Hall. For more details, visit join.mcatstudyhall.com/ or contact me through my website leah4sci.com/contact/
At 4:43 the force F, what force is that? And for how long time does it work?
That would be the applied force of the body in motion. The body was accelerating, and it has mass. Therefore, it has a force because F=ma. As for how long until the body comes to rest on the ice, well that depends on the problem. There are a lot of factors to consider - the amount of force, the amount of friction, etc.
You did not understand my question. The meaning was: from where does the force F come? Something must act on your body.
0:19 "Friction = opposes motion" Not true. There is a forward directed static friction force from the ground that makes your foot step forward and makes a car accelerate.
10:18 "Acceleration goes lower" Not true. I think you mean velocity.