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Pure maths, physics, logic (braingames.ru): non-trade-related brain games - page 60

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TheXpert:
The one that doesn't clean.
Why? It seems to depend on how the friction force changes. If you don't clean it, the mass increases and the force vector is directed vertically, and if you drop it, it is also perpendicular. In both cases friction increases, but in different ways.
Avals:
Why? It's supposed to depend on how the friction changes.
It doesn't depend on friction at all.
TheXpert:
Nothing depends on friction at all.
What else do trolleys stop at?
Avals:
What else makes trolleys stop?
Friction :) in this case. But it doesn't depend on it anyway :) . Is the pattern breaking?
TheXpert: The one that doesn't clean.

Justify it, Andrei. I have the same answer, but the moderator doesn't accept it. The answer may be correct, but my reasoning is wrong.

Avals:
What else do the trolleys stop from?

1 from friction in the axles

2 from falling snow (the mass of snow falls vertically)

Mischek:

1 from friction in the axles

2 from falling snow (mass of snow falling vertically)

The snow falling vertically does not affect the momentum of the carts, which is directed horizontally.
Mathemat:
Vertically falling snow does not affect the momentum of carts that are directed horizontally.
and mine does.
Mischek: and I have an effect.
Write the equations of motion. I'm talking specifically about impulses, not bogie speeds.
Mathemat:
Write the equations of motion.

Swap the snowflake for a poodle weight

Lower the kettlebell vertically with your hand onto a passing trolley

The kettlebell went horizontally.

It took energy from the cart.

The cart has slowed down in proportion to the weight of the weight.

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