Science Experiments

Archive for the ‘Pulley Experiments’ Category

You have learned How to make a Pulley system. Making a double pulley is an extension of the single make a pulley system experiment. Follow the method below to make a double pulley science experiment.

Equipment needed to conduct double pulley Science Experiments

Similar to the other pulley science experiment, you only need wire, thread spools, string, a hook, and a bucket of load.

Method for making double pulley experiment

1. Make two wire triangles. Use about 1 foot 2 inches (35 cm) of wire for each one.
2. Attach two spools to each triangle.
3. Thread the string around the pulleys as shown in the diagram. Use about 6 � feet (2 meters) of string.
4. Attach the heavy load to the pulley as before.

Now answer the following questions about the double pulley system you just made.

• Is it easier to life the load with the double pulley?
• How much string do you need to raise the load 1 foot (30 cm)? Compare this to the number you recorded for a single pulley experiment.

Explanation of pulley experiment

The pulley with one thread spool allows you to lift a heavy load directly underneath the pulley. The double pulley means you have to pull only a quarter as hard, but you have to pull for four times as long.

Do you want to know how to make a pulley system? Learn how to make a pulley system at your own house. Making a pulley system is easy. We will show you how to make a pulley system in this section of Science Experiments website.

What kind of materials you need to make a pulley system

To make a pulley system, you only need a wire, thread spools, string, a hook, and a toy bucket full of heavy objects.

How to make a pulley system?

Follow the method below and learn how to make a pulley system at your own house.

1. Bend about 8 inches (20 cm) of wire into a triangle shape and push the ends into a thread spool. You may need an adult to help you cut and bend the wire.
2. Find a suitable place to hang your pulley. A hook in the shed or garage or the hook at the end of a plant hanger will be fine.
3. Tie one end of the string to the handle of the load.
4. Wind the string over the thread spool.

Now answer the following questions about the pulley system you just made.

1. Is it easier to life the bucket with the pulley system or without?
2. How much string do you have to use to lift the load 1 foot (30 cm)?

Click here to read about a Double Pulley science experiment.

How to make a pulley science experiment