What is the term for the point at which a lever or crane attempts to pivot on?

• A. Tipping fulcrum
• B. Pivot axis
• C. Center of gravity
• D. Rotation point

Answer: (A)

The point a lever or crane rotates around is the fulcrum, the fixed point about which movement occurs. This is the precise term used for the pivot of a lever or crane, capturing both the idea of a hinge and the location where forces create rotation. The phrase “tipping fulcrum” fits well here because it specifies the fulcrum and ties it to the action of tipping, which is exactly what a lever or crane does around that point.

Other options are less exact: a pivot axis suggests a line rather than a single point, which isn’t the usual way we describe the lever’s rotation point; the center of gravity is where the weight effectively acts, not where rotation happens; and a rotation point is vague and less standard.