Which description matches a lever?

Which description matches a lever?

• A. A strong bar used to lift and move heavy items
• B. A wheel with a rod through its center
• C. A wheel or set of wheels using a rope
• D. A slanted surface to raise objects

Answer: (A)

A lever is a rigid bar that pivots around a fixed point called a fulcrum, allowing you to lift or move a load by applying force at one end and getting the load to move at the other. The description “a strong bar used to lift and move heavy items” directly captures this setup: a stiff bar that acts against a pivot to multiply your effort and lift or shift heavy objects. The other options describe different simple machines—wheel and axle, pulley systems, and an incline plane—rather than a lever. So this description is the best match because it reflects the essential idea of a lever’s rigid bar with a pivot used to move heavy loads.

A lever is a rigid bar that pivots around a fixed point called a fulcrum, allowing you to lift or move a load by applying force at one end and getting the load to move at the other. The description “a strong bar used to lift and move heavy items” directly captures this setup: a stiff bar that acts against a pivot to multiply your effort and lift or shift heavy objects. The other options describe different simple machines—wheel and axle, pulley systems, and an incline plane—rather than a lever. So this description is the best match because it reflects the essential idea of a lever’s rigid bar with a pivot used to move heavy loads.