20kg plate = 45lb

Its not "=", its APPROXIMATELY equals.
20kg = 44.0924524 lb
10kg = 22.0462262 lb
So how you see, math works.
Maybe this was just shitpost and you are being sarcastic, I cant tell...

the 10kg plate is wrong then, cause 10kg is actually 22.04 pounds, not 25

for your pic, it will smash against the wall. It will be hovering at a speed of zero, as the train accelerates the helicopter will move towards the end as it is stationary in the air. The reverse would happen if the helicopter was hovering while the train was moving but then decelerated

>implying the train can accelerate to 120mph before the apple hits the ground

If you throw it into the air before the train starts ans accelerates to 120mph during the apples air time, yes.

this person is right

kek

Imagine standing unsupported on a resting train. The doors close and the train starts to move. Will you stay perfectly still with no effort, or stumble backwards and maybe even fall if you don't brace yourself to prevent it?

im a good throw

u seem more like the catching sort

>What is newtons first law

There is no force acting on the helicopter that would cause it to accelerate.

>this is why we Veeky Forums

Imagine your not a faggot on the internet.

Now do it.

dude wtf

so if you throw an apple from one train window to another, both going at 120 and opposite directions you would have a 240mp apple impact within second train

no because 10kg plates are actually 11.3 kg and 20kg plates are actually 20.4kg

>tfw u shoot a bullet at someone at the front of the train before it starts moving but the bullet never reaches them because the train is now going faster than the bullet and also faster than the speed of sound so nobody in front of you hears the gunshot but everyone behind you does and when they turn around you realize that the person you're shooting at is you but the train is going faster than the speed of light so they never see you and you're not even supposed to have a gun because you never got your license and it's your dads gun and when he finds out you tried to kill yourself again he's gonna kill you

Yes.

>Plates aren't standardized to metrics

Pretty sure the 10kg is right, user.

Sup, Jaden.

>trainseconds

It`ll do some funky stuff depending on how the air behaves. This vid with a helium balloon is rather interesting youtube.com/watch?v=FjuMvUbT8gA

And yes, OP is a fag.

Imagine a colour that doesn't exist.

The helium baloon behaves like that because it's lighter than the air. Because of that it gets moved to the opposite direction of where an object would usually be launched my the acceleration or change of direction.

Does this mean americans are weaker than eurobros?

Well to be precise you can't just add velocities together. There's some relativity shit going on here! But with relativity in mind the impact would a tiny bit less than 240 mph, yes

Yep. The side of the car which the turn is being taken to has a drop in pressure during the turn so the balloon moves to where the pressure on it is lowest.

no but it does mean their plate math is shit; if we're talking about olympic bumper plates for example, two 10kg greens make up 20kg or a 'blue', easy, a green and a yellow makes 25kg equivalent to a red, simple concise addition

however two american 25lb greens make 50lbs which is neither an american red (55lbs) nor a blue (45lbs), but somewhere in between, and a yellow and a green makes 60lbs, more than a red. if you want to make up the difference from a green to a blue you have to add various 10lb plates instead of just another green. its just a bit silly

look at rogues lb plates and then at their kg plates and tell me which are more numerically pleasing
roguefitness.com/rogue-competition-plates

You are sitting in a moving car with a helium balloon that is floating but not in contact with any surfaces of the interior. The balloon is positioned in front of you and you are facing forward in the car. The car suddenly turns left 90 degrees. Relative to you, which way will the balloon be traveling?

>Thinking Relativity has impact at maximum relative speed that is 0.000037% of speed of light...

Please tell me this lol is a joke. Are you retarded?!

it depends where is located the rc remote

lolled

>the air remains stationary and is left behind as the train moves

It moves with the train but it'll move a bit relative to the train as it accelerates and the air gets compressed against the back wall

...

a car made of steel crashes into a wall of Rc helicopters at 400 metres per second - do the rc helicopters smack against the wall or move the same speed as the helicopters

the helicopter isnt just floating there though, its using its blades to push against the air inside the train, keeping it airborne. When the train moves forward, the air inside also moves forward, and the helicopter moves with it.

No, you can easily add the missing weight with smaller plates. I got a set of international plates at the swapmeet, the lbs are 44(20kg), 33(15), 22(10), 11(5) so if you count on kg it's a solid 20, in lb it's a few pounds off 45, but you can add them like 2 44s and 2 11s add the extra 1lbs to make it 45lbs each and are left with the solid 10lbs. But if I'm doing a workout with 1pl8 i just add the collars that weigh like 1lbs each.

>tfw get a cool new drone
>spin it up and start flying for the first time
>it immediately flies away at thousands of km per hour because the Earth is spinning

fug :-DDDD

That's how they get you.

>got my new RC chopper
>get that both airborne
>suddenly shoots into space at 1.3 million miles per hour
>forgot to account for the movement of the galaxy when I bought it

Not again...

Stays mid air and everyone who says otherwise is fucking retarded.
It's the same principle as if you would fly it out in the open and it stays above the same spot even though the earth rotates

...

Fucking amerifats, why can't they just do it properly and orderly

malnurished euroshit detected

When the subway starts to move does the air start rushing towards the back of the train? No theres no gush of wind that occurs from inside the train. The air stays still. The helicopter would stay still.

Y'all need to go back to high school

And this is why only murrica and few african shitholes still unironically use imperial system.

Okay.

Have any of you ever had a toy helicopter? If not have you ever had a baloon?

Ever ran your hands over and under the toy or baloon?

did the toy or baloon follow your hands?

No?

then the toy helicopter will stay in place and the train will move. It will bump into the wall or a person that is standing behind it as the train moves forward.

Wind resistance =/= friction, but yeah without that part you're right

Are you autistic?

>tfw your gym has plates in kgs and lbs so you can use combinations of the 2 to progress with less than 1kg each time

Step 1: Imagine the copter is hovering above the train. The train would move on and the copter would stay stationary above it.

Step 2: Imagine the train has no walls (just a moving ground platform), and the copter is within the would be train. The ground would move, and copter would stay stationary

Step 3: The train has walls. The copter would stay stationary until the back wall of the train hits it.

youtube.com/watch?v=gnXf7EJ8Qvc
youtube.com/watch?v=gnXf7EJ8Qvc
youtube.com/watch?v=gnXf7EJ8Qvc

QUICK WATCH THIS BEFORE THEY DELETE IT. THEY DON'T WANT YOU TO KNOW.

the walls are what stops the air moving inside the train and therefore the reason it stays in midair you fucking retard

2/10 for making me reply

>everyone not amerifat is

the train's already moving though

It took off from the floor which was already moving.

This is the new model of quadrocopter and it can reach speed faster than the train. Its a trick.

I laughed so fuckin hard at this

>lol
I bet you live in the americas my friend

Maybe if you guys called it Drag and not "air friction" like a fucking 5 year old we wouldnt be laughing.

In all 3 cases, the copter is stationary and hovering, meaning no train engine is accelerating it. Basically, the copter is always stationary in relation to the earth. When the train moves, the copter maintains its same relative position in relation to the earth, but the train does not.

Unless you think there is a fucking windstorm inside the wagon propelling the copter forward, it will crash against the wall.

TL;DR: The copter is stationary in relation to the planet, no the train

No, stronger. US pl8 is 45. Eurocuck pl8 is 44. DARPA is working on an experimental 50lbs pl8 which will skyrocket freedom gains even further ahead, too.

this

well the air in the car would start to move so the copter would get a tiny bit of drift like from wind. also the density of air at the end of the car would change as heavy air flows to the back. ( just like spilled liquid sometimes moves) with constant rpm it would move a tiny bit up since the denser air gives more lift.

maybe its feels that its simpler to understand if you reverse the whole issue. what happens if your in a car and break hard? intentia makes the shit fly forward... reverse swap car for train, bam copter hits back

By the way, the only reason as to why walls are relevant, is to stop air drag. Without walls (like on top of the train) air drag would decelerate you a bit in relation to the engine, thus propelling you backwards in relation to the train, even though both of you are still moving fast.

ITT: American Education

The train isn't going at a constant velocity. You get pushed back in your seat when a roller coaster accelerates downhill but not when it goes straight. If u jump on a train you'll land in the same spot if it's not speeding up. Try jumping on a train braking or an airplane braking. Same concept. Once the train reaches constant velocity the drone will hover. Until then it will begin accelerating backwards and will be pushed forward by drag. If the pressure in the train is high enough the copter will hover since drag will be high but for that to happen the pressure will be so high it will most likely kill everyone inside the train.

One can imagine flying a drone on a windless morning. The wind accelerates to 5mph west. The drone begins to accelerate westward. At first, only slowly. Eventually it is moving west at 5 mph

The same on the train. It would go back a bit, and eventually stop. May or may not make it to the back of the train.

So it maintains forward momentum forever when it leaves the ground?

>the force of air (a fluid which easily moves out of the way for other objects) is enough to prevent a toy from remaining motionless as a wall smashes into it.

>an object in motion won't stay in motion
>the drone isn't already spinning with the earth

your hypothetical is the exact opposite as the question posed in OP

so depending on the acceleration of the train you may or may not break your toy helicopter

kekeroo

How is it still moving with the Earth when it's not touching it at all? It's because the air the drone is hovering in is moving as well. This is the same thing that makes it hover in a train car. It propels itself using the air, and the air is contained and moving with the train.

>How is it still moving with the Earth when it's not touching it at all?
are you literally retarded?

This guy gets it.

I think this is accurate.
When you go into the subway and the train accelerates, you're pushed a bit towards the back wall, but since you're touching the ground/sitting/holding something, you're body accelerates nearly instantaneously with the train.
Since the drone is hovering solely on the air inside the wagon, it will probably accelerate at a lesser rate than a sitting passenger. This means that if the acceleration is too high, the drone might crash into the back-wall, although the train would need an extreme rate of acceleration for that.

The air would move it 5mph relative to the ground because that's where the observer is observing it. In a train going 120mph, the air, the observer and hovering drone would be going 120mph too. So to the observer the drone would hover.

The blades are pushing down, which is perpendicular to the air inside the trains movement

For the helicopter to remain "in the same place" relative to the inside of the train it would need to tilt away from the wall and fly forward slowly

otherwise there wouldn't be enough surface area for the air to push the helicopter forward at the same rate as the trains wall.

and most likely unless the train accelerates at .0000000000000000000000000000000000000000000000000001 m/s^2 or some other ridiculously slow rate it will hit the wall

stick to lifting bros and get a really good body because holy shit you guys are dumb as fuck

wew

Can't wait for mythbusters to try this and completely fuck it up in the process.

The air in the train does not move. Do you feel wind when you're on a subway car?

mythbusters is over buddy

They already did Plane on a Treadmill which is essentially the same thing. Things that propel themselves by air are not affected by the ground moving.

>the air in the train does not move
relative to the motionless helicopter it does.

if you were on a cart
then you jumped
and as you left the cart
the cart lurched forward but stopped just before you landed
would you have moved with the cart?
or would you be further towards the back of the cart?

>and most likely unless the train accelerates at .0000000000000000000000000000000000000000000000000001 m/s^2 or some other ridiculously slow rate it will hit the wall

I don't think that's the case.

The moment which the drone will be the most propelled backwards is the beginning, because it's when there is a higher gap between it's own speed and the one of the train.
Let's say it takes one second for the drone to keep up with the acceleration of the train
At the beginning of acceleration, the drone will move at like 1km/h while the train will move at like 10km/h,
so there will be a 90% difference in speed.
But mid acceleration wise, the drone will be moving at like 40km/h and the train at 60km/h, in which the difference of speed falls to 33%

Even though the speed difference during acceleration changed from 9km/h to 20km/h, the proportion in relation to total speed decreases, so in relation to the train, the drone will be increasingly less pushed backwards as the train accelerates

a helicopter can't fly if the pressure above it isn't lower than the pressure below it, thats how they fly, the propellers blow air down, so the pressure below the helicopter is higher than above it, if the choper blows the air inside the container on a way that the pressure above is the same as downwards it won't fly

>not answering the question so you can feel smart if you're wrong

...

...

i won't fly for very long, so unless as soon as the heli goes up the train moves it will won't smash on the wall