Profit???. Umbrella, Long Board, Leaf Blower... ...Profit???.. but wouldn't the equal and opposing reaction cause him to stay still. if the "leaf blower" were a fan that had its suction on the top or bottom and th Profit??? Umbrella Long Board Leaf Blower but wouldn't the equal and opposing reaction cause him to stay still if "leaf blower" were a fan that had its suction on top or bottom th
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> hey anon, wanna give your opinion?
asd
#1 - rubiksdodecahedron
Reply +62 123456789123345869
(01/04/2014) [-]
but wouldn't the equal and opposing reaction cause him to stay still.   
if the "leaf blower" were a fan that had its suction on the top or bottom and the exhaust from the back this would work without the umbrella. or even if he just pointed the leaf blower behind him it would work without the umbrella.
but wouldn't the equal and opposing reaction cause him to stay still.
if the "leaf blower" were a fan that had its suction on the top or bottom and the exhaust from the back this would work without the umbrella. or even if he just pointed the leaf blower behind him it would work without the umbrella.
#2 to #1 - paustasnukis
Reply 0 123456789123345869
(01/04/2014) [-]
u wot m8
He doesnt have a umbrella at behind him.
Im fairly sure that the air that gets sucked into the leaf blower if it even gets sucked into it because i have no ******* clue how leafblowers work is sucked in slower then it is blowed out.
And the ******* umbrella thats why hes able to move forward
User avatar #16 to #2 - eiaisqzbsesb
Reply +1 123456789123345869
(01/04/2014) [-]
Ok, so like, there's this law of motion and force made up by this really smart dude named Newton. Newton's Laws Of Motion (3): Action And Reaction

Basicly, any thing that produces force in one direction produceds an equal force in the other.
Now, the leaf blower issue. Sure, the leaf blower will push air towards the umbrella which in turn produces foreward force. However, since he is holding this leaf blower, the same amount of force is pushed back towards his hand, meaning that the blower does nothing for him.
User avatar #3 to #2 - rubiksdodecahedron
Reply 0 123456789123345869
(01/04/2014) [-]
i never said the umbrella was behind him. and most leaf blowers take suction from one or both sides and shoot the air out the front.
#4 to #3 - paustasnukis
Reply -2 123456789123345869
(01/04/2014) [-]
so basicly you just said that there is no =reason why this wouldn't work
User avatar #5 to #4 - rubiksdodecahedron
Reply +1 123456789123345869
(01/04/2014) [-]
the force being applied to the umbrella to push it forward is equal to it's actually slightly less due to friction with the air between the blower and the umbrella the force being applied in the opposite direction on the guy by the leaf blower due to him holding it. as I said in my first comment it would work if he pointed the leaf blower behind him and left the umbrella out of the equation.
#6 to #5 - paustasnukis
Reply -3 123456789123345869
(01/04/2014) [-]
the force is by far higher thanks to the umbrella and thats why he moves forward.
The whole point is the goddamned umbrella if he did not have it he would not move or move veeery slowly does not matter which way he points it.
#7 to #6 - nobavyrkan
Reply 0 123456789123345869
(01/04/2014) [-]
Whether you have an umbrella or something else is irrelevant, this would not work! rubiksdodecahedron is absolutely right, it's actio and reactio. There is most likely just a lot of wind, as you can see in this video: www.youtube.com/watch?v=sTmfetILQ-o
#8 to #7 - paustasnukis
Reply -2 123456789123345869
(01/04/2014) [-]
irrelevant... Top ******* lel m8 so sails on ships are irrelevant rite. The wind just propels the ship because it blows to the main body of the ship and thats enough.
#9 to #8 - nobavyrkan
Reply 0 123456789123345869
(01/04/2014) [-]
That's a different story because the source of the wind isn't on the ship... Thats why i post the youtube video...
#10 to #9 - paustasnukis
Reply -2 123456789123345869
(01/04/2014) [-]
www.youtube.com/watch?v=FsaNQEf9dpg
heres the source of the content and it looks like theres very little wind and it does not look edited and it does not seem like its edited.
#11 to #10 - nobavyrkan
Reply 0 123456789123345869
(01/04/2014) [-]
Okay seems i have to do proper research but it still makes no sense to me... If someone would run besides him with the leaf blower it would make perfectly sense but this... I'm completely confused now
User avatar #26 to #11 - SteyrAUG
Reply 0 123456789123345869
(01/05/2014) [-]
It doesn't make any sense because it's not possible. The air blowing on the umbrella is a force that would cause forward movement, and is equal and opposite to the force the leaf blower produces blowing the air at the umbrella. paustasnukis is either trolling you or needs to take a physics class.
User avatar #15 to #11 - jefglv
Reply 0 123456789123345869
(01/04/2014) [-]
He simply needs to understand Newton 3. It's that simple. He's just a pleb.
#13 to #11 - honkan
0 123456789123345869
has deleted their comment [-]
User avatar #14 to #13 - honkan
Reply 0 123456789123345869
(01/04/2014) [-]
Never mind I really can't think straight. My comment makes no sense and misses the issue entirely.
#32 to #14 - wisconsinwhitepowa
Reply +2 123456789123345869
(01/05/2014) [-]
#87 to #32 - anon id: 568180ba
Reply 0 123456789123345869
(01/05/2014) [-]
#17 to #1 - anon id: 5028e415
Reply 0 123456789123345869
(01/05/2014) [-]
that is true but it dose work the did a thing on mythbusters on it and it works.
yay for mythbusters!!
#33 to #1 - anon id: d89e0d44
Reply 0 123456789123345869
(01/05/2014) [-]
did noone see the mythbusters episode where they concluded it is indeed possible to blow your own sail?
User avatar #34 to #1 - nexdemise
Reply 0 123456789123345869
(01/05/2014) [-]
I'm guessing it's the air being deflected from the umbrella that's pushing him forwards. He'd be better off just pointing the leaf blower to the rear.
User avatar #35 to #1 - thegurudude
Reply 0 123456789123345869
(01/05/2014) [-]
Wouldnt it just act the same as a sail?
User avatar #67 to #35 - rubiksdodecahedron
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(01/05/2014) [-]
#9
User avatar #46 to #1 - skulldan
Reply 0 123456789123345869
(01/05/2014) [-]
not the point
#89 to #1 - endospore
Reply 0 123456789123345869
(01/05/2014) [-]
Has no one here watched Myth Busters? They tested this exact thing, except with a fan and a sailboat, and confirmed it. Mythbusters Blow your own sail full scale
#12 to #1 - aleksandurr
Reply +19 123456789123345869
(01/04/2014) [-]
yes, the net force in this scenario is in fact 0 newtons, as the leafblower pushes him backwards, but the umbrella catches the breeze and pushes forwards. You hold them in place, so you are part of the system, and so you are experiencing 0 net force. Any speed you had before these forces were applied would decrease due to normal friction with the ground, and so he simply got himself to a high speed and turned on the leaf blower, changing absolutely nothing for acceleration.
Its basically a more clever troll physics.

I assume this is most people who read this, but I dont give a ****
#20 to #12 - insanepain
Reply +6 123456789123345869
(01/05/2014) [-]
You had my interest at the downsyndrome cat..

You had my full attention at the logistics of your argument.
#71 to #12 - alleksi
Reply +1 123456789123345869
(01/05/2014) [-]
I assume this is most people who read this, but I dont give a ****

No, sorry, but you're not some rare high intellectual of this website. That's basic physics and anyone over the age of — I don't know; 13? 14? — understood perfectly fine what you were saying.
#18 to #12 - sgtxrootbeer
Reply 0 123456789123345869
(01/05/2014) [-]
actually, if the leaf blower produces enough force then the umbrella will catch the air and actually push it backwards thus producing forward thrust\
#25 to #18 - anon id: 9a3adb08
Reply 0 123456789123345869
(01/05/2014) [-]
Unlikely for it all to be strong enough to overcome friction, and the umbrella would likely break if the thrust was high enough to be redirected backwards.
#22 - alazurus
Reply +38 123456789123345869
(01/05/2014) [-]
I saw this at first im like:"Wtf, not possible..."



But then i remembered that one mythbusters episode....
#24 to #22 - anon id: 9a3adb08
Reply 0 123456789123345869
(01/05/2014) [-]
But that was really only because the sail "reflected" the gust from the fan, resulting in a significantly reduced (though existent) net force. Newton's laws are still pretty much infallible.

Also, don't believe everything you see on mythbusters. It's a good show, but they fail horribly in terms of following a proper scientific process.
#42 to #24 - anon id: 95b42488
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(01/05/2014) [-]
#28 - Fwimble
Reply +16 123456789123345869
(01/05/2014) [-]
no
#36 to #28 - ricks
Reply -4 123456789123345869
(01/05/2014) [-]
wut.
#65 - oceloy
Reply +5 123456789123345869
(01/05/2014) [-]
#88 to #65 - anon id: 568180ba
Reply 0 123456789123345869
(01/05/2014) [-]
hey no way man longboard fast
#39 - MCmc
Reply +5 123456789123345869
(01/05/2014) [-]
everyone is saying this, but in intelligent talk:

all the forward force the leaf blower generates into the umbrella is pushing against the guys hand backward. Therefore it cancels out and you move nowhere because force forward = force backward.

for this to work someone else would have to hold the leaf blower and run next to him
User avatar #52 to #39 - thecomkiller
Reply 0 123456789123345869
(01/05/2014) [-]
that is what happens in the perfect world of pure math
In reality, things aren't so simple
#50 to #39 - astarothaufromage
Reply +1 123456789123345869
(01/05/2014) [-]
Yeah, but it doesn't end there. Some air "bounces" of the umbrella and still provides that little bit of momentum you see here. So he would go a hell of a lot faster if he left that umbrella out and blew the other way.
User avatar #45 - antzell
Reply +3 123456789123345869
(01/05/2014) [-]
User avatar #30 - redrex
Reply +2 123456789123345869
(01/05/2014) [-]
i'm pretty sure this wouldn't work, but i have no idea how to explain why
User avatar #37 to #30 - Kingsteveooo
Reply 0 123456789123345869
(01/05/2014) [-]
I Don't see why not. Steering would be difficult but possible especially with practice
User avatar #38 to #37 - redrex
Reply +1 123456789123345869
(01/05/2014) [-]
something having to due with physics
User avatar #48 to #38 - orchdork
Reply 0 123456789123345869
(01/05/2014) [-]
the force of the leafblower pushing back on the guy would negate the force of the wind on the umbrella (newton's 2 law?). He would be pushed backwards the same amount he is being "pulled" forward
#40 to #37 - milfncookies
Reply 0 123456789123345869
(01/05/2014) [-]
Are you seriously dumb enough to think this could work?
#44 to #40 - anon id: fc62ea9c
Reply 0 123456789123345869
(01/05/2014) [-]
Calls people dumb for thinking something can't work

Doesn't bring arguments as a basis to confirm it.

YFW
#91 to #44 - milfncookies
Reply 0 123456789123345869
(01/12/2014) [-]
Basic physics. Newtons 3rd law.
User avatar #93 to #91 - Kingsteveooo
Reply 0 123456789123345869
(01/12/2014) [-]
Well, its a start but how about expanding your thought a wee bit eh?
#94 to #93 - milfncookies
Reply 0 123456789123345869
(01/13/2014) [-]
User avatar #96 to #94 - Kingsteveooo
Reply 0 123456789123345869
(01/13/2014) [-]
So this wouldn't work because for every action there is an equal and opposite reaction?
#95 to #94 - Kingsteveooo
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has deleted their comment [-]
User avatar #41 to #40 - Kingsteveooo
Reply 0 123456789123345869
(01/05/2014) [-]
Dumb enough to give it a shot at least. Tell me why it wouldn't work.
#92 to #41 - milfncookies
Reply 0 123456789123345869
(01/12/2014) [-]
the force applied to the umbrella is canceled by the force pushing back on the blower
User avatar #29 - kingofants
Reply +2 123456789123345869
(01/05/2014) [-]
This would only work if the object causing the force (in this case the leaf blower) were not connected to the mans system i.e. if someone else was running along side
the force from the leaf blower is so small I highly doubt it would propel the man forwards anyway
User avatar #53 to #29 - thecomkiller
Reply 0 123456789123345869
(01/05/2014) [-]
actually, in practice that only holds up to a certain point. At a certain threshold the man is actually propelled forward by the air bouncing back off of the umbrella.
#23 - include
Reply +2 123456789123345869
(01/05/2014) [-]
#56 - ninthismywaifu
Reply +1 123456789123345869
(01/05/2014) [-]
The umbrella isnt acting as a sail all its doing is redirecting the air coming out of the leaf blower to push you forward. A more effective way to do the same thing would be to take a vacuum hose and attach it to the end of the leaf blower and point it behind you. Or better yet chuck the umbrella and turn the leaf blower 180 degrees.
Go to 2:05 www.youtube.com/watch?v=uKXMTzMQWjo

User avatar #70 to #56 - alleksi
Reply 0 123456789123345869
(01/05/2014) [-]
although in this case it's just a fake video. the leaf blower is not nearly powerful enough to have the same effect as that gigantic propeller
User avatar #90 to #70 - ninthismywaifu
Reply 0 123456789123345869
(01/05/2014) [-]
The leaf blower only has to overcome the force of friction between the long board and the road to maintain his speed. he probably pushed himself to get the initial speed. And with the giant propeller even though it is alot more powerfull its also tugging a much heavier boat through water (Much greater force of friction), and the sail is also less effective at deflecting the air behind it.