Question

The output force is between the fulcrum and the input force for a bottle opener.

Which class of lever is a bottle opener?


third

first

second

Answer 1

A bottle opener is classified as a **first class lever**. In a first class lever, the fulcrum is located between the effort (input force) and the load (output force). In the case of a bottle opener, the fulcrum is where the lever pivots (usually near the bottle cap), the input force is applied by pulling the handle down, and the output force is applied to the bottle cap to lift it off.