Question

What is a lever ? What is a fulcrum ? What are load and effort ?​

Answer 1

• levers are machines used to increase force. We call them "simple machines" because they have only two parts — the handle and the fulcrum. The handle or bar of the lever is called the "arm" — it's the part that you push or pull on.

• The "fulcrum" is the point on which the lever turns or balances.

• Load is a heavy or a bulky object that requires effort to move or lift the load.

• Effort is an applied force to bring desired change to the position (push or lift) of the load.