rojo/.cursor/rules/roblox/en-us/physics/constraints/rope.md

title	description
Rope	RopeConstraint prevents two attachments from separating further than a defined length, with optional behavior as an extending or contracting winch.

For an overview on creating, visualizing, and simulating mechanical constraints, including `Class.RopeConstraint`, see [Mechanical constraints](../../physics/mechanical-constraints.md). Also see [Roblox units](../../physics/units.md) to understand how Roblox units compare to metric units.

A Class.RopeConstraint prevents two attachments from separating further than a defined Class.RopeConstraint.Length|Length. The attachments can move closer together than this length and both can freely rotate. Class.RopeConstraint.Restitution|Restitution defines the elasticity of the attachments when they reach the separation limit specified by Class.RopeConstraint.Length|Length.

This constraint can also be powered to behave as a motorized winch.

Winch

If a rope's Class.RopeConstraint.WinchEnabled|WinchEnabled property is enabled, it attempts to translate the attachments to a set separation specified by Class.RopeConstraint.WinchTarget|WinchTarget, effectively the target length of the rope in studs. This translation is controlled by Class.RopeConstraint.WinchSpeed|WinchSpeed, Class.RopeConstraint.WinchResponsiveness|WinchResponsiveness, and Class.RopeConstraint.WinchForce|WinchForce.

`Class.RopeConstraint.WinchSpeed|WinchSpeed` must be a **positive** value, used to either contract or extend the rope length to `Class.RopeConstraint.WinchTarget|WinchTarget`. Setting a negative speed will revert to 0, not reverse the winch servo direction.