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Fix in_static_equilibrium for NumPy 2.x (2-D cross product removed) #15110

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Merged
cclauss merged 1 commit into from
Aug 28, 2026
Merged

Fix in_static_equilibrium for NumPy 2.x (2-D cross product removed) #15110

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8 changes: 6 additions & 2 deletions physics/in_static_equilibrium.py
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Original file line number Diff line number Diff line change
Expand Up @@ -4,7 +4,7 @@

from __future__ import annotations

from numpy import array, cos, cross, float64, radians, sin
from numpy import array, cos, float64, radians, sin
from numpy.typing import NDArray


Expand Down Expand Up @@ -51,7 +51,11 @@ def in_static_equilibrium(
False
"""
# summation of moments is zero
moments: NDArray[float64] = cross(location, forces)
# NumPy 2.x removed the 2-D cross product, so compute the scalar
# (z-axis) moment for each row directly: x_i * Fy_i - y_i * Fx_i.
moments: NDArray[float64] = (
location[:, 0] * forces[:, 1] - location[:, 1] * forces[:, 0]
)
sum_moments: float = sum(moments)
return bool(abs(sum_moments) < eps)

Expand Down