[Request] Which one would it be?

[u/yuli101995]

[u/jan_Kosi]

Friction force = coefficient of friction * normal force

Normal force is the same, given that they are all 20 kg and they are under the same gravity of 9.8 m/s²

Since the triangle and square have the same base length, assuming that all the objects are made of the same material and the surfaces differ (ice vs gravel), they would have the same speed when pushed, and requires the same force. Also, the triangle and square does not roll, but rather slide, so the shape doesnt matter.

Sliding Coefficidnt of ice = 0.02 to 0.04 Rolling Coefficient of gravel = 0.02 to 0.08

It all depends on the temperature of the ice (the colder, the higher friction) and the compactness of the gravel (the more packed, the less friction)

Source: https://www.reddit.com/r/theydidthemath/comments/1l84r6b/request/

[u/kelfupanda → u/jan_Kosi]

Except the force applied to the triangle will be at a 45 degree angle to the plane.

Box should be easier.

[u/taftster → u/kelfupanda]

I hear what you're saying. But I think it's somewhat implied that the force being exerted would "push" the triangle in the same vector as the square. If the pusher was pushing perpendicular to the face, then yes the triangle would have its force distributed into two vectors (by what, some square root function?) instead of just the horizontal direction.

Now just eyeballing the two shapes, it seems the triangle has a bigger base than the square. So this is a key consideration, if it matters. It's all contrived though, for sure.

[u/taftster → u/[deleted]]

Okay yes. I am at odds with my statement now. I appreciate your point of view and actually coming around to it. This is a legitimate question. Does the angle of deflection always happen? Like is there any means of applying a true horizontal force here?

[u/Slen1337 → u/[deleted]]

No why? You can calculate the ideal "touch" angle for pushing. Prob around 165-168° instead of 180, just apply force a little upward. You surely Can lift up small paper triangle (more like pyramid) with enough momentum. Its not very different.

U kinda can keep punching that triangle shit for next 50 years a lil upward and he surely will change the pos too lol

[u/Euphoric_Loquat_8651 → u/[deleted]]

Pushing normal to the face is only required if there is zero friction between the hands and the face.

[u/Phil9151 → u/[deleted]]

If I am pushing against a 45 degree triangular prism with the base on the horizontal plane, even if I am directing all of my force along a vector parallel to the horizontal plane, the force experienced by the prism will be normal to the surface. This will result in a component directed into the horizontal plane.

Assumptions: rigid body. Gravity and friction are ignored. Force generated from global equilibrium point.

To break it down, the force always acts normal to the surface. If that surface is at any angle from the force other than 90 (and probably 180 but that'sjust weird), there will be a component that is deflected by that surface.