Friction: Crash Course Physics #6

Why is it hard to move a heavy bookcase across a carpeted floor? And why is it easier to keep it moving than it was to get it started moving? You might think it's all about weight, but actually it's about friction. Two kinds of friction! In today's episode of Crash Course Physics, Shini Somara tells us about Static and Kinetic friction; how they work and how they're different.

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Thanks to the following Patrons for their generous monthly contributions that help keep Crash Course free for everyone forever:

Mark, Eric Kitchen, Jessica Wode, Jeffrey Thompson, Steve Marshall, Moritz Schmidt, Robert Kunz, Tim Curwick, Jason A Saslow, SR Foxley, Elliot Beter, Jacob Ash, Christian, Jan Schmid, Jirat, Christy Huddleston, Daniel Baulig, Chris Peters, Anna-Ester Volozh, Ian Dundore, Caleb Weeks

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[crashcourse]

We made quiz questions to help you review the content in this episode! Find them on the free Crash Course App!

[MrARock]

I love how simple physics is so useful, so long as you've memorized all of the infinite possible coefficients.

[oldasyouromens]

Her accent combined with the rhythm of the way she speaks makes this course pretty easy for me to grasp.

[StereoSoundAgent]

I wish I had discovered this a week ago. I'll be watching 3 of your physics videos over the next 24 hours repetitively to obtain a better grasp. Your series is the only series of youtube videos that makes the material possible to comprehend.

[sagnikchakraborty]

8:20
"Nothing is going to make it start rising above the surface of the ramp, right?"
<insert evil alien abduction>

[l.benjamind.]

so I was like, "Bro, I should totally watch this video, it sounds cool." I watched for a couple minutes, then my brain exploded.

[IPGD]

Wonderfull. I love the host.
She is able to deliver it well.
Mostly Physics are delivered in a boring way.

Thank you for great video.

[EugeneKhutoryansky]

Understanding the friction in the interpersonal relations between human beings is much harder than understanding the types of friction discussed here.

[hickswasright]

I really love how the nerdiness has been 'ramped up' in this series....






I'll show myself out.

[aquamus]

As a university physics student, I suggest discussing Galilean transformations soon. It was so frustrating getting to university and realising 3D problems, which were difficult in high school, could be simplified to the point of being almost trivial. Also, a good understanding of Galilean transformations makes special relativity (later on) much easier to understand :)

[nirupamkhanal]

Host:"The first thing we need to do is draw a free body diagram of the slope"
Me: *in horror* "NO, STUPID. WE NEED TO STOP THE BOX."

[lilliang]

comment section: oh no trigonometry


me: laughs in physics c

[kidi]

As my physics teacher taught me:
No friction = no joy.

[HeintZ]

I have a physics exam coming up so these videos are going to help alot! Thank you Crash Course and Dr. Shini Somara.

[selinamasetle]

I recently discovered this channel, I always used the crash course for physiology and started to use this one for physics and I just wanna say you are a great help, everything makes more sense now so thank you...I always give appreciation where it is due so keep up with this!

[alishasvlogs]

The host makes me enjoy physics more then when I am in class

[jive.rider_]

You teach me math in a science video better than my math teacher 😂

[VEE]

1:15 Kramer's entry was perfect!!

[madeleinebraye]

I am a college student sitting here drinking my coffee and preparing for an exam. TF for you fam.

[ahorrell]

Trigonometry? Great, now I need Crash Course Math. DON'T TEASE ME I'M OLD AND NOT SMART

Loving the series though