Levers Worksheet by toontownlady · Ninja Plans - Free Printable

To solve the problem, we need to identify the class of each lever and label the fulcrum, effort, and load for each image. Let's go through each image step by step.

Key Concepts:

1. Classes of Levers:
- Class 1 Lever: Fulcrum is between the effort and the load.
- Class 2 Lever: Load is between the effort and the fulcrum.
- Class 3 Lever: Effort is between the load and the fulcrum.

2. Components of a Lever:
- Fulcrum (pivot point): The fixed point around which the lever rotates.
- Effort (input force): The force applied to move the lever.
- Load (output force): The resistance or weight being moved.

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Image Analysis and Solutions:

#### 1. Scissors (Top Left)
- Class: Class 1
- Explanation: In scissors, the pivot point (fulcrum) is in the middle, with the effort applied at one end and the load at the other end.
- Labels:
- Fulcrum: Middle pivot point.
- Effort: Handle where you apply force.
- Load: Cutting edge where the force is applied to cut.

#### 2. Wheelbarrow (Top Middle)
- Class: Class 2
- Explanation: In a wheelbarrow, the load is placed between the effort (where you push) and the fulcrum (the wheel).
- Labels:
- Fulcrum: The wheel.
- Effort: Handles where you push.
- Load: Rocks or materials in the tray.

#### 3. Seesaw (Top Right)
- Class: Class 1
- Explanation: A seesaw has the fulcrum in the middle, with effort and load on opposite sides.
- Labels:
- Fulcrum: Middle pivot point.
- Effort: Person applying force.
- Load: Other person being lifted.

#### 4. Pliers (Bottom Left)
- Class: Class 1
- Explanation: Pliers have the fulcrum in the middle, with effort applied at one end and the load at the other end.
- Labels:
- Fulcrum: Pivot point in the middle.
- Effort: Handles where you squeeze.
- Load: Jaw ends where the force is applied to grip or cut.

#### 5. Fishing Rod (Bottom Middle)
- Class: Class 3
- Explanation: In a fishing rod, the effort is applied near the load (the fish), and the fulcrum is at the base of the rod.
- Labels:
- Fulcrum: Base of the rod.
- Effort: Point where you hold and pull the rod.
- Load: Fish at the end of the line.

#### 6. Chopsticks (Bottom Right)
- Class: Class 3
- Explanation: Chopsticks have the effort applied near the load (the food), with the fulcrum at the far end held by the fingers.
- Labels:
- Fulcrum: Far end held by the fingers.
- Effort: Near end where you apply force.
- Load: Food being picked up.

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Final Answer:

\[
\boxed{
\begin{array}{ccc}
\text{Scissors} & \text{Wheelbarrow} & \text{Seesaw} \\
\text{Class 1} & \text{Class 2} & \text{Class 1} \\
\text{Fulcrum: Middle pivot} & \text{Fulcrum: Wheel} & \text{Fulcrum: Middle pivot} \\
\text{Effort: Handle} & \text{Effort: Handles} & \text{Effort: Person pushing} \\
\text{Load: Cutting edge} & \text{Load: Rocks} & \text{Load: Other person} \\
\\
\text{Pliers} & \text{Fishing Rod} & \text{Chopsticks} \\
\text{Class 1} & \text{Class 3} & \text{Class 3} \\
\text{Fulcrum: Middle pivot} & \text{Fulcrum: Base of rod} & \text{Fulcrum: Far end held by fingers} \\
\text{Effort: Handles} & \text{Effort: Point where you pull} & \text{Effort: Near end} \\
\text{Load: Jaw ends} & \text{Load: Fish} & \text{Load: Food} \\
\end{array}
}
\]