Newton's Laws: Crash Course Physics #5
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I'm sure you've heard of Isaac Newton and maybe of some of his laws. Like, that thing about "equal and opposite reactions" and such. But what do his laws mean? And how do they help us understand the world around us? In this episode of Crash Course Physics, Shini talks to us about just that. *** Produced in collaboration with PBS Digital Studios: http://youtube.com/pbsdigitalstudios Help PBSDS win a Webby Award by voting here: https://pv.webbyawards.com/2016/online-film-video/video-channels-and-networks/science-education Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse 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 -- Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashC... Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support CrashCourse on Patreon: http://www.patreon.com/crashcourse CC Kids: http://www.youtube.com/crashcoursekids
Comments
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Very interesting video but doesnt the lift weight 2000 kg witht he woman inside?
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This is hard!!!(that last problem) And I'm in physics.
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how hard do you have to hit a hockey puk (if its not done bij a human because they aren't able to hit it hard enough) to smash the person in the goal backwards into the goal?
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thanks a lot this will help me on my test's
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You are so hot!
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PORTUGUESE PLEASE !!!!
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Did no one notice the Mighty Ducks reference?? 1:54
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Why is acceleration due to gravity g taken as -a?? I mean, as it's due to gravity, and being pulled downwards, won't acceleration due to gravity always be negative??
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Is that elevator lesson an example of motion of connected bodies??
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How are we supposed to decide which side is positive? I mean, according to the Cartesian plane or whatever it's called, everything to the right and above the origin O is positive and the other part is negative, right? Also, how are we supposed to determine the positive and negative sides if a z-axis is involved?
BTW, great vid. I srsly love your channel <3
It helps me sooooooooooo much!! :D -
Another way to solve the elevator system of equations would be to set one equation equal to the tension force and substitute. It's essentially the same thing, but substitution is a useful skill :)
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Actually, she is slightly wrong. The reindeer can move, not because the "force from the ground" is stronger, but the bigger mass of the earth give it a greater inertia, which indeed makes it harder to move. In conclusion, they both "receive" the same amount of force, but the object with the lower mass (in this case, the reindeer) gets more aceleration, therefore it moves.
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You could at least mention a more general form of 2nd Newton's law.
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How do we know the 2 tension forces are the same?
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Isn't it widely known that the normal force is not actually the reaction force to gravity? That's how I've been taught.
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normal force and the gravitational force are not pairs!! so therefore didn't define Newton's third law
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I'm here to learn
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....... WOW. ITS GREAT
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so much KNOWLEDGE
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