SCIENCE CLASS #5- How Do Astronauts Weigh Themselves?

Үзсэн тоо 776 408

Today we'll be discussing inertia and Newton's 1st law!

Hit me up with your creative interpretations to this class on Insta, Twitter, FB, or TikTok to win some Bose 700s. Alternatively you could tell your friends about our class here together. 8 winners. Maybe do one of the demos or a new one or make a video teaching your friends a principle from the class!

I stream classes every Wednesday at 1pm!

Check out Dianna's channel where she did 20 experiments around her house in 5 minutes!
Check out Bob's channel-

Mark Rober
  • Mark Rober

    Mark Rober

    Жилийн өмнө

    Hit me up with your creative interpretations to this class on Insta, Twitter, FB, or TikTok to win some Bose 700s. Alternatively you could tell your friends about our class here together. 8 winners. Maybe do one of the demos or a new one or make a video teaching your friends a principle from the class!

    • Alexandra


      25 өдрийн өмнө


    • Spacelover 900

      Spacelover 900

      Сарын өмнө

      @Kevin Luo pretty sure he knows that

    • Nightmare


      Сарын өмнө


    • Nick E

      Nick E

      4 сарын өмнө

      Is it possible to send a message in space

    • batxvv bolor

      batxvv bolor

      6 сарын өмнө

      @Kevin Luo Uub

  • Luis Miguel

    Luis Miguel

    8 өдрийн өмнө

    Mass is not a meassure of how much stuff is in an object.

  • Nick Hanson

    Nick Hanson

    23 өдрийн өмнө

    What law is the ketchup if u hold it upside down and swing your arm in a circular motion doing the bottom half of a sphere and the ketchup moves toward the top?

  • Mahiyat Safiyullah

    Mahiyat Safiyullah

    27 өдрийн өмнө

    Simple mass in kg is the same wherever you go so mass times gravitational field strength equals weight. P.S. the gfs of the Moon is 1.6 N Kg-¹.

  • Aanya Makhija

    Aanya Makhija

    Сарын өмнө

    Why don't my school teachers teach like this huh?

  • TheRedDemon


    Сарын өмнө

    im watching this while doing homework. im 4 mins in and iv learned more so far then in all the homework iv been doing for a little over an hour.

  • 152 Srikar Yendluri

    152 Srikar Yendluri

    Сарын өмнө

    "That brick wall ain't going any where"
    - Mark rober 2020

  • Lynn Watkins

    Lynn Watkins

    2 сарын өмнө

    16:04 i was the one on the right

  • Angel Jonguitud

    Angel Jonguitud

    2 сарын өмнө


  • Cast and Spear

    Cast and Spear

    2 сарын өмнө

    The millennial bill nye

  • Federal Noob association

    Federal Noob association

    2 сарын өмнө

    1 nail would hurt all those nails equal it out so won't cut you like 1 nail would

  • Lorie Woughter

    Lorie Woughter

    2 сарын өмнө

    How do I send it

  • Ra


    3 сарын өмнө

    Skip to...12:00 to know how 😅

  • ItchYoBoi BefTheGreat

    ItchYoBoi BefTheGreat

    3 сарын өмнө

    I wish u were my Psychics Teacher XD

  • Shadow Phoenix YT

    Shadow Phoenix YT

    3 сарын өмнө

    "Which is easier to move? The wagon or the Semi-Truck?"
    Strong guy: Can't move a wagon without making it go flying: "The truck."

  • Gary Cullen

    Gary Cullen

    3 сарын өмнө

    The fresh pail ethnically murder because trout increasingly pack except a wandering romania. cluttered, chubby shirt

  • Ishuman Chaudhary

    Ishuman Chaudhary

    3 сарын өмнө

    Tomorrow's someone's birthday. Dropping a video would be a treat for us, even for the celebration..
    Love you Mark. Happy birthday in advance.

  • IBPASNU Gaming

    IBPASNU Gaming

    3 сарын өмнө

    I personally prefer not to have a hammer or a weight thrown at me.

  • Tater’s Woodshop

    Tater’s Woodshop

    3 сарын өмнө

    “Class is over!” I don’t want to leave yet!😢 Absolutely awesome classes!

  • Emma Yennie

    Emma Yennie

    4 сарын өмнө

    "If this hurts, your fired!"

  • la science avec ayman

    la science avec ayman

    4 сарын өмнө


  • Sandro Francis Miranda

    Sandro Francis Miranda

    4 сарын өмнө

    "Objects are lazy"
    - ROBER, Mark 2020

  • Eric R

    Eric R

    4 сарын өмнө

    I had your "calculate the weight of an astronaut" question on a final physics exam in college (Carnegie Mellon). I gave your response by using springs and the formula. However, I only got 1/2 credit because I failed to talk about the effects of the spring on the spacecraft -- i.e. the spacecraft will exert a force on the spring as the spring interacts with the spacecraft. So, the answer is more complex than just a simple formula!

  • God of thunder

    God of thunder

    4 сарын өмнө

    Thos are for kids. 13:15

  • Aziz Fenais

    Aziz Fenais

    4 сарын өмнө

    Mark, from a fellow Engineer to another, you are a great representative and admire your work. I learned from many things so let me try to payback and teach you something... Dubai is a city in UAE not a country 😋

  • Nick E

    Nick E

    4 сарын өмнө

    My experiment is going to be which bachery works better a lemon or potato by putting them in surcets and seeing which light will be brighter

  • Moneyiscoollol


    4 сарын өмнө

    13:35 Voice crack

  • jon vw

    jon vw

    4 сарын өмнө

    Simply, Thank you!

  • Samuel Rogers

    Samuel Rogers

    4 сарын өмнө

    Why not weigh them when doing routine thrusts, for maintaining orbit distance. Just use a very accurate scale and see how hard they are pushed into it by the acceleration. If you don't have gravity just make your own.

  • Endless Surprises

    Endless Surprises

    4 сарын өмнө

    I wish you had been my science teacher.

  • M.S


    4 сарын өмнө

    I am the last one

  • matīss


    4 сарын өмнө

    why my teacher can't explain things like that?

  • Apple I

    Apple I

    4 сарын өмнө

    Me: Seeing Inertia
    Me 2 seconds later: *Singing Bill Nye the science guy because they heard inertia is a property of matter in the song.*

  • Apple I

    Apple I

    4 сарын өмнө

    Who else had Bill Nye the science guy intro in their mind when you saw inertia.

  • Martyn Lamb

    Martyn Lamb

    4 сарын өмнө

    Does the spring not fatigue over time and slowly but surely, give an incorrect measurement?

  • FrogEater420


    5 сарын өмнө

    who else here from an actual science class

  • Nothing\


    5 сарын өмнө

    Funny I should come across this. I was just wondering this question myself earlier today. The best I could come up with was to spin the astronaut and measure how much energy it takes to spin them up to a certain amount of angular momentum. Then you could work out from the energy required and figure out the mass of the object, or person. Of course this is wildly impractical and inelegant. So I'm sure they've got something better.
    In retrospect, I'm sure doing the whole thing linearly instead of spinning the astronaut would work, as well. Get something to push them, then measure their speed and how much energy the device put into pushing them and you should get a good idea of how much mass you just moved.

  • lol lol

    lol lol

    5 сарын өмнө

    I mostly learn things from youtube than school

  • Aze


    5 сарын өмнө

    .... Um, inertia IS newton's first law. You're literally talking about the same thing.
    "Newton's first law states that every object will remain at rest or in uniform motion in a straight line unless compelled to change its state by the action of an external force. This is normally taken as the definition of inertia." - NASA
    1. a tendency to do nothing or to remain unchanged.
    2. (Physics) a property of matter by which it continues in its existing state of rest or uniform motion in a straight line, unless that state is changed by an external force."

  • Ray Seo

    Ray Seo

    5 сарын өмнө

    I never thought I would actually see someone who worked for NASA play on a baby playground while they’re still in adult

  • Ray Seo

    Ray Seo

    5 сарын өмнө

    Imagine just be walking in a park and then seeing An adult playing in a playground by himself

  • Jason Wedge

    Jason Wedge

    5 сарын өмнө

    Thank you so much.

  • Brown Sugar

    Brown Sugar

    5 сарын өмнө

    Ha ha we pulled off the table cloth he said by the way do you not try this at home but try this at home

  • gangstreG123


    5 сарын өмнө

    An educational video by a NASA-level engineer, in 2020, and we still have video interlacing. Also why does he sound like a guy about 3-4 drinks in at a party?

  • Michelle Holmes

    Michelle Holmes

    5 сарын өмнө

    I think I got it I’m on clue 2. The astronaut will stand on something that pushes them to a scale that will sense the momentum

  • Buttifranz100 Og 1

    Buttifranz100 Og 1

    5 сарын өмнө

    I wish he was my real techer😃

  • Max Crawford

    Max Crawford

    5 сарын өмнө

    What is it called when you lift 5 pounds 100 times instead of 500 pounds once?

  • Michele Godlevski

    Michele Godlevski

    5 сарын өмнө

    Thanks for the shout out from a female scientist. :-) Oh,and I've been having fun quizzing my engineer husband to see if he knows the answer to your questions before he sees the video.

  • Mrbee1


    6 сарын өмнө

    Bro I’m a boy

  • Yzabelle Kristín Úlfarsdóttir

    Yzabelle Kristín Úlfarsdóttir

    6 сарын өмнө

    All science teachers could never

  • James Ivan Salvador

    James Ivan Salvador

    6 сарын өмнө

    im asking my self why i am watching this in the middle of our bible class i also dont know cause i dont really know

  • TrueVexus


    6 сарын өмнө

    I thought it was as simple as inertia and math

  • Spinx Gregorio

    Spinx Gregorio

    6 сарын өмнө

    me sees a cool title watches the whole vid until u realized that the answer is just the horse at the playground

  • Jonah Varkul

    Jonah Varkul

    6 сарын өмнө

    Mark: just reflect the hammer out of the way easy.
    Me: sure mark.

  • Erin Bruder

    Erin Bruder

    7 сарын өмнө


  • Erin Bruder

    Erin Bruder

    7 сарын өмнө


  • LifeExplained


    7 сарын өмнө

    Woman runs around neighborhood
    Sees Mark Rober on a five year old toy

  • Emily Wilson

    Emily Wilson

    7 сарын өмнө

    This is fantastic and perfect for my 8th grade science unit on Mass/Weight/Gravity! Thank you!



    7 сарын өмнө

    You should try skate boarding but learning like sciencey and stuff

  • Valdas Kulikajevas

    Valdas Kulikajevas

    7 сарын өмнө

    Mark would be the best teacher out there!

  • Ubi Dubi DOO

    Ubi Dubi DOO

    7 сарын өмнө

    is there friction in space???
    pls reply :(

  • Seknd


    7 сарын өмнө

    Please do More of these

  • Jeramie T

    Jeramie T

    8 сарын өмнө

    Tip for ketchup bottles. Open the lid and squeeze the bottle a little and close it back up while still squeezing so that the pressure in the bottle is lower than atmospheric. And now when you open the lid after moving the ketchup to the opening, it will not spew out everywhere . Also, I sling the bottle while holding the base and use centrifugal force instead of acceleration and deceleration lol

  • G A

    G A

    8 сарын өмнө

    So the people who work for NASA ... that killed people .. anyhow .... now do this ... ok ))) now the space shuttle’s make sense!! ... oh not

  • G A

    G A

    8 сарын өмнө

    Drugs ... ?

  • G A

    G A

    8 сарын өмнө

    Welcome back to an adult child ...

  • Asian pepperoni

    Asian pepperoni

    8 сарын өмнө

    thank god this si here i am having a hard time learning newtons law

  • CrucifiX XX

    CrucifiX XX

    8 сарын өмнө

    Anyone here from a comment from Daily Dose of Internet

  • Clegy


    8 сарын өмнө

    This is Grade 8 highschool physics right here

  • The Drawn Potato

    The Drawn Potato

    8 сарын өмнө

    1m IQ organic human and hello, I'm fellow organic human

  • M N

    M N

    8 сарын өмнө

    These are wonderful, I don't think they need to be Live to be honest! So you can take your time to make them in a way that is convenient, because these classes are excellent (I have a degree in aero engineering and I still find them engaging 😄)

  • GG’ S

    GG’ S

    8 сарын өмнө

    Me quiting science to learn more from this

  • Draw - Gon

    Draw - Gon

    8 сарын өмнө

    That ball didn't stay where it is come on mark

  • College Stuff

    College Stuff

    8 сарын өмнө

    not your best work homie

  • Christopher Krause

    Christopher Krause

    8 сарын өмнө

    Can confirm, mark rover would be an absolutely amazing physics teacher. Any school would be lucky to have him

  • CrumblingCookie


    8 сарын өмнө

    ''mass is what matters''
    the physics dads snicker in the background

  • uchka uchral

    uchka uchral

    8 сарын өмнө

    5:56 my guess is by being pushed or somethins similar

  • 5K Subscribers Without Any Video

    5K Subscribers Without Any Video

    8 сарын өмнө

    *This dude is better at explaining than all my teachers, combined*

  • Name Here

    Name Here

    8 сарын өмнө

    Wait so if we went to Mars I can finally be able to dunk on 10 feet?

  • Syco_G2


    8 сарын өмнө

    I am 13 and you teach me more than i need to know

  • Mark Lynch

    Mark Lynch

    8 сарын өмнө

    You are good man.. Keep it up

  • Rose Pena

    Rose Pena

    9 сарын өмнө

    This is what we are learning now so I showed my teacher

  • Rachel Sortino

    Rachel Sortino

    9 сарын өмнө

    As a physics teacher, I love these videos and would love to use them in my classes, but the auto-captions that they currently have do not meet ADA standards for my Deaf and Hard of Hearing students. YouTube makes it pretty easy to go through and edit the captions for grammar and accuracy (ie adding punctuation and correcting any words that did not transcribe properly). I know some of your videos have full and proper captions, would love to see that for this video as well!

  • SBerT


    9 сарын өмнө

    Oh my god
    Mark Rober
    Mars Rover
    Is it mind blowing or what? 😱

  • Keep It Simple

    Keep It Simple

    9 сарын өмнө

    Rober's First Law of Motion : "Objects are lazy" 😂

  • Caroline Patricia

    Caroline Patricia

    9 сарын өмнө

    I'm not even interested in science but I've always been following his experimental videos and istg if he's the teacher for my science class I'd understand better the way he explains things and all that

  • Leo Etgen

    Leo Etgen

    9 сарын өмнө

    he knows me

  • killer bee

    killer bee

    9 сарын өмнө

    Please make some more

  • MrRandom


    9 сарын өмнө

    Imagine what that person jogging with their dog at the playground thought of Mark on the spring thing

  • Sophie Sellers

    Sophie Sellers

    9 сарын өмнө

    can you become my high school physics teacher. pls

  • Brian Dalton

    Brian Dalton

    9 сарын өмнө

    Video idea here: DemolitionRanch on YouTube has 2 videos on shooting a bullet threw a curved pipe and it works, maybe try to partner with him, honestly if your able to get ahold him he would do it any day he could. Then you give us the science on it and that video would be amazing. You could even try to partner with the slow mo guys and do clear pipes to watch the bullet travel.

  • TheUnbidFox


    9 сарын өмнө

    Mark makes science fun WITCHCRAFT

  • tedrose15Vlog


    10 сарын өмнө



    To Mark Rober

  • Pradeep Keshwani

    Pradeep Keshwani

    10 сарын өмнө

    I wish my physics teacher taught me like this

  • common


    10 сарын өмнө

    teacher who all im seeing is mark rober

  • Sharanya saini

    Sharanya saini

    10 сарын өмнө

    Attach a scale to the wall and launch yourself feetfirst with an acceleration of 9.81m/s at the scale at 90 degrees to the scale? Then take a measurement of the largest force that was reached...?

  • Willom9


    10 сарын өмнө

    Mark simping



    10 сарын өмнө

    I imagined an astronaut being slammed back and fourth by ping pong rackets with a weighing scale taped to them

  • Alex Torres

    Alex Torres

    10 сарын өмнө

    Imagine running by a random Man riding a sea horse in the Playground lol

  • David Ro

    David Ro

    10 сарын өмнө

    Could you do a video on the theragun? I was doing some research and I believe it is a simple percussion motor and companies are up selling their massage devices when it should be less than 100 dollars.