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Mystery #4Tier 3balance and forces

How does a towering crane lift enormous weights without tipping straight over?

A tower crane can lift a load heavier than a car, dangling it high above a building site on a long thin arm. All that weight hangs far out to one side, yet the crane stands there calmly and never tips over. How does a towering crane lift enormous weights without tipping straight over?

A tower crane standing over a building site, its long jib reaching out one way and a short counter-jib with weights the other
Photo: Flocci Nivis · CC BY 4.0 · via Wikimedia Commons

Your guess

What do you think might sit on the crane's other side to keep it steady?

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