Explain this

[Anonymous No.10411083]

A child could see this is wrong, yet it is taught in every university freshman course in the USA. Why is physics such bullshit?

[Anonymous No.10411087]

>>10411083
I suggest you read Principia Mathematica first. Then you can come back to this board if you still have any questions.

Nice art by the way.

[Anonymous No.10411088]

>>10411083
>it is taught in every university freshman course in the USA
No it isn't

[Anonymous No.10411089]

>>10411083
corrected

[Anonymous No.10411097]

>>10411083
>yet it is taught in every university freshman course in the USA
no
>Why is physics such bullshit?
it's not
> Explain this
it's called newton's law of gravity. an object of mass M near the surface of the earth falling a distance h has a work Mgh done on it, the velocity it has after falling h is given by (1/2)mv^2 = mgh, and if it hits the ground after falling h, the energy mgh might be enough to fuck up e.g. a helicopter

[Anonymous No.10411110]

>university freshman course

[Anonymous No.10411116]

>>10411110

[Anonymous No.10411119]

>>10411089
>>10411083
The helicopter is accellerating mass of air downwards. That is the work being done.

[Anonymous No.10411168]

>>10411083
>puzzle posters always shitpost

Legit it seems.

[Anonymous No.10411282]

>>10411119
That doesn't explain why the falling helicopter does no work.

[Anonymous No.10411284]

>>10411282
Work is done on it by gravity

[Anonymous No.10411301]

>>10411284
>work is done on it by gravity
Work should be done by gravity in all three of OP's images.

[Anonymous No.10411310]

>>10411083
How did the helicopter reach that hight..? It's almost as if it applied work in order to get up there

[Anonymous No.10411321]

>>10411083
this image doesn't know if the work is being done by the helicopter or the ground
by earth:
>gravity * 0 movement = 0
>gravity * height = work
>gravity * height = work
by helicopter:
>thrust * 0 movement = 0
>thrust * negative height = negative work
>0 thrust * negative height = 0

[Anonymous No.10411331]

>>10411083
you're confusing mechanics of objects in a gravitational field with other forms of energy

[Anonymous No.10411339]

>>10411083
nice painting nigga

[Anonymous No.10411417]

>>10411301
"Should?" Says who?

[Anonymous No.10411584]

>>10411417
>invitation to appeal to authority

[Anonymous No.10411615]

1) The blade does work, accelerating air downward over the height of the blade. If the thing has forward velocity, drag does work on the helicopter. Gravity does no work.

2) Assuming the blade does not spin (it will irl), the blade does no work. Gravity does work=helicopter*g*height fallen and drag does work.

3) Ditto, up until broken parts are thrown from the wreck

Fuck off OP

[Anonymous No.10411618]

>>10411584
No vertical displacement=no work by gravity, my retarded wojak posting friend.

[Anonymous No.10411647]

>>10411618
>posting furryshit
>with cripplechan checksums

[Anonymous No.10413033]

bump