When you're sliding on a 2nd plate for deadlifts and your hoodie drawstring gets stuck inbetween them

4th law of newtonian physics:

All enclosed objects cast aura of permanence on any smaller object within it. Aura of permanence causes the smaller object to behave as if it is a free moving member of the larger object.

helicopter stays still

You can feel a train accelerating when it starts moving if you're standing so I'll say it'll drift towards the wall

1st law. An object in motion stays in motion an object at rest stays at rest

...

the air in the train is stationary in the car, which is what the medium the aircraft is flying through.

It will stay put.

Please be a troll. If you jump while you're in a train do you go flying to the back? You're still a part of the system of train even if you are not touching it.

You do if the train starts moving after you jumped

idiot

> You're still a part of the system of train even if you are not touching it.

Through telekinesis???

If you jump while the train is at rest and it suddenly jolts forward while you're in mid-air, then you will move back down the train.

so what gives it the force to stay where it is? When you're in a train, you start moving with the train because you're on the ground. So you're saying that the air alone will accelerate the helicopter?

The air inside the train is not stationary compared to the train when it starts moving. Air has inertia just like everything else.

the air doesn't have to give any force. the chopper is in the air which starts moving with the tram (obviously) so the chopper will move with the air

>the air which starts moving with the tram (obviously)

What? What makes the air move? The whistle of the train conductor telling it that it should now move?

Id it was a riny micro copter in a shoebox itd hit the wall..right?

you're a fucking idiot. if you're touching the train, the force is being applied to you and the momentum is transferred. when you jump out of a car, there's a reason why you 'fly' back. because you are no longer having the momentum of the car transfer to you. that's also the cause of centripetal force. your momentum is FORWARDS along with the car since you're TOUCHING it. if you shoot a baseball into a car window as it speeds by you, it's not going to just become sepulchered mid air in the car. it doesn't not have the momentum of the car nor can the car act a force upon it. unless the train can act a force upon the drone, there is no force to propel it forwards. it will hit the wall in the back.

>When you're feeling huge with a pump but you're natty and a roid user enters the room

>when you jump out of a car, there's a reason why you 'fly' back

yeah, air resistance. You still jump out at the speed of the car but you will quickly be slowed down due to air resistance.

exactly. you have momentum carrying you forward in the car. When you jump out, air resistance will slow you down and the lack of the cars momentum will no longer keep you going forward. that's why people can STAND on trains and move forward. it's not the air resistance, it's the lack of force being applied to counter act it.

The helicopter isn't touching anything so it would stay still while the train rams into it

>unless the train can act a force upon the drone, there is no force to propel it forwards. it will hit the wall in the back.

It uses the air in the train to propel itself forward. The air moves along with the train so the helicopter will move with the train too.

It depends on how quickly the train accelerates.

When the train accelerates it will also push on the air and accelerate it in turn. The moving air will put a force on the helicopter which will cause it to accelerate as well.

However, the drag force from air is limited and will not provide a huge acceleration. If the train accelerates too fast, the drag force will not be strong enough and the helicopter hits the well. At higher accelerations fluid mechanics comes into effect as well as air can easily compress and thus lower the expected drag force on the helicopter.

TLDR; depends on speed, on normal train will move somewhat towards the wall

Man physics is some crazy shit.

the air itself has very little force. the only thing that can propel the AIR are the molecules that hit the back of the train as it propels, and the kinetic force that translates back to the other molecules then to the drone. the resulting force would be immeasurably small, somewhere on the molecular level. F=ma, and you're talking about molecules that have masses so low that it is close to nothing compared to a drone. wouldn't affect it. back to the baseball into a car window analogy, the air inside the car wouldn't sepulcher the baseball in mid air. the acceleration of the car or train would surpass the force exerted by air onto the drone, meaning it would crash into the back.

Air can generate plenty of force. How do you think airplanes work?

Baseball isn't a good comparison because it's a dense sphere designed to minimize drag force. A small drone is lighter and has a wider aerodynamic profile.

The air inside the train is at 0mph when the train is still. When the train moves the air starts to compress on the opposite side of the trains direction. This causes an air pressure increase which in turn will move the stationary floating helicopter. However this is too small of a force to make any noticable difference and the helicopter will stay in place as the train starts to move