Newton's 2nd Law (12 of 21) Calculate Acceleration w/o Friction; Inclined Plane, Pulley, Two Masses
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- เผยแพร่เมื่อ 19 ต.ค. 2014
- Shows how to calculate the acceleration and tension in the string for a two block system on an inclined plane without friction using Newton' Second Law. The acceleration of an object is directly proportional to the net force applied to the object and inversely proportional to the mass of the object. The second law can also be stated in terms of an object's changing momentum, such that the rate of change of momentum of an object is directly proportional to the net force applied and the change in momentum is in the direction of the net force.
You can see a listing of all my videos at my website, www.stepbystepscience.com.
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You are honestly the best tutor ever! I was very confused (I'm not the strongest in science) but this video just saved me! THANK YOU!
i studied physics years ago ( about 50 years to be more exact) and as i am now retired, i'm going over it again. Your explanations are helping me to remember and renew. Loads of thanks!!!!
My son is currently failing physics, but finding you on YT has given us hope that learning this subject is very much possible. Thank you for all the good content!
Best of luck! Great and thanks for letting me know and thanks for helping your son.
I've been trying to understand physics this entire quarter. Up until I found your videos I'd get so frustrated at it but now I'm getting problems right! Your videos are so clear and helpful, THANK YOU!!
Dear Doc Brian,
I must tell you that I have created whole sections of my current physics notebooks, with "Doc Brian" dedicated material. I can't thank you enough for being so through and concise. I am a very specific student, and I need someone like you to help build the core of my confidence. Your tutelage has been invaluable. I cannot thank you enough for sharing your gift, and helping someone who always feels miles behind the rest of the pack. You are a God send Doc Brian.
Bless you Sir,
Bobby Octaviano 😃
That is very very nice of you to take the time to write such a nice comment. I make the to help people who, like myself, benefit from step-by-step instruction. Again, thank you.
Thank you so much for your time and clear explanations!
Wonderful video. Despite having a problem similar to this but flipped I was still able to solve it due to the great explanation. Quick question though, why did you make gravity positive instead of negative? I could see why for m2 block but not for m1since you made right side of x axis positive.
I procrastinated until 2:00 AM and this just saved my life
Good things the internet is open 24/7. Thanks for the comment.
Great!! So clearly explained with a lot of details.
Glad you liked it and thanks for the comment
Thank you for the great explanation.... Helped A lot.... ☺
you legend. so helpful thank you
Omg this is so incredible i thought that i would NERVER solve such question 💕💕
So glad it was helpful! Thanks for the comment.
clear and simple explanation!!!!
this is what i need
Yes, I try to go over everything step by step, in fact you can see a listing of all my videos at www.stepbystepscience.com
thanks for this videos its help for the students
Thanks man this really helped me understand this problem
Great that it did and thanks for the comment
thanks a bunch
thank you.your video is really helpfull.in short but with lots of details,
this is me sometimes it is hard to fit everything into 10 minutes of less. Thanks for the comment.
Thank you.
How do you calculate mass ?
well explained
awesome
You are a lifesaver
I did all subbed, commented and liked
Excellent, thanks. You can see a listing of all my videos at my website, www.stepbystepscience.com
Thank you so much!
You are very welcome.
Good explanation!
Thanks, glad you think so!
why didn't you use the Y component of M1?????
Hi Doc,
Love your video but just had a question. When you are finding the sum of the forces to divide it by the entire mass, why can you just subtract those two values? Don't they need to be in the same direction (x or y) to resolve them? Thanks
I am not quite sure that I understand your question but....I subtracted one force from the other because they point in opposite directions, m2g is up the ramp and m1gx is down the ramp. Does that help?
somewhat, however m1 pointed slanted, not directly down as m2 is.
great explanation
great, thanks for the comment.
I don't understand how he is getting 52.3 N as his final tension. m1gx (which is 4.23) + m1a (which is 10 times 1.09 = 10.9). 10.9 + 4.23 does not equal 52.3 N. Am I doing something wrong?
I don't get it either and I hate how he doesn't explain it nor does anyone in the comments.
m1gx is =(10x9.8xsin(25))= 41.42, then add your m1a which = 10.9, so you get 52.3 N
m1gx =m1g sin (theta)= (10x9.8 sin (25)=41.42 + 10.9 +52.3
Was the coefficient of friction given or was it zero because there is no friction between the object and the incline plane?
+HeythereKaye In this case the coefficient of friction is zero. There is a link at the beginning of the video for a similar problem with friction or you can see a listing of all my videos from my website, www.stepbystepscience.com
m2 should be bigger than m1 to have acceleration otherwise Fx is bigger than Fg...
ur amazing !!!!!!!
Sara Garcia Nice of you to say
it might be a lame question but how did you decide to choose 45 degrees instead of another number like 40 or 50, I'm probably missing something so obvious but yes help!
His choice of 45 degrees was arbitrary, but he chose a value so that the acceleration was calculated as negative in order to show that it's possible under certain conditions that the weight slides in the other direction as when the angle was 25 degrees.
I'm sorry but wouldnt you covert the weights of the blocks to newtons using Fg=m*g before putting them into the eqaution for the acceleration, because acceleration is the sum of the forces not the sum of the masses . You still get the same nswer either way it was just a bit confusing
I think I did that, but there is of course more then one way to solve the problem.
I wish my professor could explain anything half as well as you.
I know man my teacher for my ap class just expects us to know what is going on
what will be result if the diagrum change as mirror view
none?
At the very end solving for tension. On M1 I am not getting 52.3 N. 10 x 9.8+10 x 1.09 = 108.9 N.
Aw thank you very much. late nights doing work doesn't help. this video was amazing and very helpful. The kind if explanations that favour my way of learning 😀😀👌
Great that you guys are helping each other out.
You can see a listing of all my videos at my website www.stepbystepscience.com
what happened to the normal and the y component of the mass on the inclined plane?
+farida basawad or nvm i got it
+farida basawad Great,
You can see a listing of all my videos from my website at www.stepbystepscience.com
is this vince vaughn?
That's right! and still crashing weddings too!
Wait wat?!!! It should be the other way around the mass of m1 is bigger than m2
Oh sorry so you can choose
A Nice Comment :P
I think it is supposed to be a "nice positve comment".....but all the same thanks for watching and commenting.
You can see a listing of all my videos at www.stepbystepscience.com
Seems like a good video, but the asmr peanut butter eatting is a little much for me