International Tug-of-War Day

What the day is

International Tug-of-War Day is observed on February 19. It was an Olympic sport from 1900 to 1920, and still has an international federation running world championships.

Origin and background

The Olympic history includes a famous dispute. At the 1908 London Games the British teams were drawn from police forces, and the American team protested that their opponents were competing in heavy regulation boots, which effectively functioned as anchors. The protest failed, the Americans withdrew, and the incident is still cited in arguments about equipment rules.

That dispute points at the physics. Tug of war is not primarily a contest of pulling strength, because the rope tension is equal at both ends by definition. What differs is how well each team converts its weight into grip on the ground. The winning team is the one generating more friction and directing its force closer to horizontal, which is why competitors lean far back, keep the rope low and dig in. A lighter team with better technique regularly beats a heavier one that stands upright.

The forces involved are larger than spectators assume, and the sport has a serious injury record. A rope under load that fails releases enormous energy, and there have been catastrophic incidents, including one at a Taiwanese event in 1997 in which a rope snapped and severed arms. Competition rules therefore specify rope construction and inspection.

The rule that matters for anybody playing informally is absolute: never wrap the rope around a hand, wrist or body. A hand tied into a failing rope, or into a rope that suddenly accelerates, cannot be released.

How to take part

• Never wrap the rope around any part of the body. Grip only.
• Lean back and keep the rope low, which is where the mechanics favor you.
• Wear boots with real tread. Friction is the actual contest.
• Inspect the rope for wear before pulling, and use a proper one.
• Look up the 1908 boots dispute, which is a good sporting argument.