Pulley Assignment worksheet - Free Printable

Let's solve the problem step by step.

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Part 1: Label the Pulleys

We are given three diagrams of pulley systems and asked to label them using the following terms:

- compound pulley
- effort
- fixed pulley
- load
- movable pulley

#### Diagram 1 (Left):
- The pulley is attached to a fixed frame (top), and the rope goes over it. The load is hanging below.
- The pulley does not move with the load — it’s stationary.
- This is a fixed pulley.
- The effort is applied downward (red arrow).
- The load is the weight being lifted (blue arrow).

✔ So:
- Top box (above red arrow): *effort*
- Bottom box (under green block): *load*
- Label under diagram: *fixed pulley*

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#### Diagram 2 (Middle):
- The pulley is attached to the load, so it moves up and down with the weight.
- This is a movable pulley.
- The effort is applied upward (red arrow), pulling the rope.
- The load is the weight being lifted (blue arrow).

✔ So:
- Label under diagram: *movable pulley*

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#### Diagram 3 (Right):
- There are two pulleys: one fixed at the top, one movable attached to the load.
- The rope runs through both pulleys, which is characteristic of a compound pulley system.
- This setup combines fixed and movable pulleys to increase mechanical advantage.

✔ So:
- Label under diagram: *compound pulley*

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✔ Final Labels:

| Diagram | Label |
|--------|-------|
| Left | fixed pulley |
| Middle | movable pulley |
| Right | compound pulley |

And in the first diagram:
- Green block → load
- Arrow pointing down on rope → effort

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Part 2: Complete the Definition

We are given these words to use:

> grooved, wheels, load, simple machine, rope

Complete the sentence:

> A pulley is a __________ that uses ________ ________ and a _______ to raise, lower or move a ________.

Let’s think logically:

- A pulley is a simple machine.
- It uses grooved wheels (the pulley itself has a groove for the rope).
- And a rope wrapped around the wheel.
- To move a load.

So fill in:

> A pulley is a simple machine that uses grooved wheels and a rope to raise, lower or move a load.

✔ Correct sentence:
> A pulley is a simple machine that uses grooved wheels and a rope to raise, lower or move a load.

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✔ Final Answer Summary:

#### Labels:
- Top diagram:
- Green block: load
- Arrow on rope: effort
- Bottom diagrams:
- Left: fixed pulley
- Middle: movable pulley
- Right: compound pulley

#### Definition:
> A pulley is a simple machine that uses grooved wheels and a rope to raise, lower or move a load.

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