Dynamics - Lesson 5: s-t, v-t, a-t Diagrams Erratic Motion

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people who disliked this definitely think earth is flat

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Lmao!

[@coltonbrennan3873]

We need more videos on dynamics Mr Hanson! You pulled me through statics and I appreciate that. Got the best grade I've ever had in an engineering class, but this dynamics professor is not very good and your videos would really help me and my classmates. Thank you!

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I agree with this !

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[@nicklabriola6474]

Your videos are a life saver. I am a Mechanical Engineering student at MSU Denver, and I have yet to have a professor as informative as you. I really hope you post more videos on dynamics. Thank you!!!

[@Snooperking]

you're a literal stress reliever Dr. Hanson. I have been so stressed trying to understand my teacher (it's his first year teaching) and you're making things crystal clear. thank you so much.

[@brandonboettcher5091]

Every video of yours I watch I think, "I wish you were in your class." Thank you for stepping up and teaching those with tenured professors.

[@ZambiblasianOgre]

I'll be starting my Dynamics module tomorrow. You couldn't have picked a better time to start this series! Thank you, Sir! Your method of teaching is so clear.

[@georgesadler7830]

DR. Hanson, thank you for an incredible lecture on position time, velocity time and acceleration time Diagrams Erratic Motion. These diagrams are very useful for understanding acceleration, velocity and position.

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These dynamic videos came right in time to review for Systems and Vibrations

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Deer Jeff,please upload ur fabulous and amazing new videos about Dynamics.We approach to the first half of dynamics but there is no new uploads.And it means insurmountable problems.Please save our lives dear Doctor

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[@Peter_1986]

If you ever feel like refreshing your knowledge of dynamics then I can also strongly recommend Hibbeler's book on the subject, "Engineering Mechanics - Dynamics". That book is dope, it has a lot of example problems with detailed solution steps and is very easy to use. It even has a bunch of "Fundamental Problems" after most sections, which are kind of like warmups for the ordinary Problems. It's basically like Hibbeler's "Engineering Mechanics - Statics" book. It also has "Review Problems" for a few chapters at a time, and those problems are just as demanding as exam problems.

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Nice one doc. Waiting fr impulse and momentom soon

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are there any good videos on changing the x axis from position to time or time to position?

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thank you for helping us

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@1234jhanson you might never see this, but I just passed my Mechanical FE Exam. I graduated college 17 years ago. I wanted to say thank you for this channel because it helped me immensely.

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Thank you.

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Thank you!

[@mustafasalah3876]

Hello sir I have two question 1- How can I find v-t graph from a -s ? in other way if given to me a-s graph and ask me to find v-t graph how can I doing that ? 2- How can I find s-t graph from v -s ? in other way if given to me v-s graph and ask me to find s-t graph how can I doing that ?

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Dang, this method is so damn simple.

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Ilike that " woop, back to there"... 😂😂😂😂😂

[@willpope302]

why is the base of the second triangle in the velocity graph 100 and not 50?

[@misterty4258]

Is there a way to get the blur square to stop randomly appearing? It keeps blocking parts that you are working on and preventing me from seeing what you are doing.

[@juanespericuet1142]

Can you do some videos on thermodynamics

[@albertwastaiger2337]

in the last eqn why its not -t^3-120t^2 ....

[@owen7185]

Jeff you rock

[@raulelias309]

How come after the 10 s, We can't integrate the -2 m/s^2 to get our velocity function?

[@playboicartigenome5973]

you actually can do that but u would need to add a constant C when u finish integrating. Then, solve for C by pluggin in the values of v and t at that point (so v=100m/s and t=10s). After substituting those in you get C = 120 which makes the same equation that he had for v which is v = -2t + 120

[@CJ-dm8ce]

I need the video for calculating the Area Can someone hand me the link?

[@markjames4068]

Shouldn't the total area of the velocity graph be 2500? 500 for the left triangle and 2000 for the left considering t goes from 10s to 50s? That would be 0.5(40)(100)=2000? Then add the left side for 2500 m total?

[@karimfaizy766]

Bro, The base for 2nd traingle is 50 so u assume it 40. its 50. If it become that much so the total area become 3000.

[@natnaelkora3200]

can't we find the time by substituting V by zero? since it is going in to rest

[@moda4511]

No because you have 2 different motions of movement " acceleration and then deceleration" so you do the graphs and deduce equations for each.

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im on final for dynamics rite now and you just want to start the series . Unlucky me

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thats me right now wish me luck

[@tanmayhinge]

7:33

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Your the Shit! Best on KZbin. Can I be your best friend? Lol. Thanks for your time to post this video.

[@bamlakmulatu9782]

What is the answer then

[@karimfaizy766]

I just need to know why 2nd graph come to zero but 3rd didnt?

[@tallalalshaalan]

The 2nd graph represents the velocity, and the problem is asking you to find the time when the car comes to rest after the deceleration. That's why the 2nd graph ends at zero, because the car is stopping. The 3rd graph is showing the displacement of the car, which doesn't make sense to come back to zero since the car is not going backward, it's just slowing down.

[@karimfaizy766]

@@tallalalshaalan Thank u bro pleasure to help me i got just.

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"I'm so out of space"

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Can you translate your video inhinfi

[@LordAlkaser]

how did he got 50 sec ???

[@theonlybonsu]

the second area has to be 100 also, since the car is coming back to 0m/s (rest). So knowing the area is 100; you divide that by -2m/s^2 (deceleration) and you get 50 sec (time taken to stop).

[@saoodalazmi4448]

There is another solution way and much much easier than this and more accurate.

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Sai baba

[@cagataygulenc3732]

teacher in the formula S= So+Vot+1/2at^2 but we used in this we used 1/2at only why???

[@omarhosari479]

Cagatay Gulenc So and Vo are equal to 0

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Algorithm comment