Ropes try

package net.dermetfan.utils.libgdx.box2d;

import com.badlogic.gdx.physics.box2d.Body;
import com.badlogic.gdx.utils.SnapshotArray;

/** holds {@link Rope ropes} with the same segment bodies
 *  @author dermetfan */
public class Ropes extends Rope {

    private final SnapshotArray<Rope> ropes = new SnapshotArray<Rope>(2);

    public Ropes(Rope main) {
        super(main);
    }

    public Ropes(Rope... ropes) {
        this(ropes[0]);
        for(int i = 1; i < ropes.length; i++)
            addRope(ropes[i]);
    }

    public Rope createRope() {
        return createRope(getBuilder());
    }

    public Rope createRope(Builder builder) {
        return new Rope(builder, getSegments());
    }

    /** syncs this Rope's segments with the ones of the {@link #ropes} */
    public void sync() {
        Body[] segments = getSegments();
        for(Rope rope : ropes) {
            Body[] ropeSegments = rope.getSegments();
            if(ropeSegments.length < segments.length)
                for(int i = ropeSegments.length - 1; i < segments.length; i++)
                    rope.add(segments[i]);
            else if(ropeSegments.length > segments.length)
                for(int i = segments.length - 1; i < ropeSegments.length; i++)
                    rope.remove(i);
        }
    }

    public void addRope(Rope rope) {
        if(ropes.contains(rope, true))
            return;
        Body[] segments = getSegments(), ropeSegments = rope.getSegments();
        for(int i = 0; i < segments.length; i++)
            if(ropeSegments[i] != ropeSegments[i])
                throw new IllegalArgumentException("the given " + Rope.class.getSimpleName() + " does not hold the same segments as this " + Ropes.class.getSimpleName());
        ropes.add(rope);
    }

    public void addRopes(Rope... ropes) {
        for(Rope rope : ropes)
            addRope(rope);
    }

    public boolean removeRope(Rope rope) {
        return ropes.removeValue(rope, true);
    }

    public Rope removeRope(int index) {
        return ropes.removeIndex(index);
    }

    public Rope getRope(int index) {
        return ropes.get(index);
    }

    @Override
    public Rope build(int length, Builder builder) {
        Rope rope = super.build(length, builder);
        sync();
        return rope;
    }

    @Override
    public Body extend() {
        Body segment = super.extend();
        for(Rope rope : ropes)
            rope.add(segment);
        return segment;
    }

    @Override
    public void add(Body segment) {
        super.add(segment);
        for(Rope rope : ropes)
            rope.add(segment);
    }

    @Override
    public Body insert(int index) {
        Body segment = super.insert(index);
        for(Rope rope : ropes)
            rope.insert(index, segment);
        return segment;
    }

    @Override
    public void insert(int index, Body segment) {
        super.insert(index, segment);
        for(Rope rope : ropes)
            rope.insert(index, segment);
    }

    @Override
    public Body replace(int index, Body segment) {
        for(Rope rope : ropes)
            rope.replace(index, segment);
        return super.replace(index, segment);
    }

    @Override
    public Body remove(int index) {
        for(Rope rope : ropes)
            rope.remove(index);
        return super.remove(index);
    }

    @Override
    public void destroy(int index) {
        for(Rope rope : ropes)
            rope.remove(index);
        super.destroy(index);
    }

    @Override
    public Rope split(int jointIndex) {
        Ropes split = new Ropes(super.split(jointIndex));
        for(Rope rope : ropes)
            split.addRope(rope.split(jointIndex));
        return split;
    }

    public Rope[] getRopes() {
        ropes.end();
        return ropes.begin();
    }

}