Brooke Martin
Mouse traps are a common household item, often used to catch mice. However, they can also be used for creative science experiments and craft projects. One such project involves attempting to blow out a candle using a mouse trap. This challenge can be approached in several ways, such as using the mouse trap to squeeze a small bellows to blow air on the candle flame or to unwind a toy airplane propeller to generate enough wind to extinguish the flame. These projects can be educational, providing lessons in physics, engineering, and design.
How to blow out a candle with a mouse trap
| Characteristics | Values |
|---|---|
| Distance between candle and mouse trap | 1 meter or 39 inches |
| Minimum number of simple machines required | 4 |
| Mousetrap inclusion | Does not count as a simple machine |
| Household items | Can be used |
| Types of simple machines | Lever, twisted rubber band, weighted pulley system |
| Blowing out the candle | Mousetrap arm can squeeze a small bellows to blow air on the flame |
| Blowing out the candle | Mousetrap can unwind a toy airplane propeller to produce enough wind to extinguish the candle |
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What You'll Learn
Mousetrap and candle one metre apart
Mousetrap and candle projects are often used in educational science experiments and craft projects. One such project involves attempting to blow out a candle placed one metre away from a mousetrap. Here is a step-by-step guide to designing a machine that will blow out a candle using a mousetrap:
Firstly, decide on the mechanism that will produce enough wind to extinguish the candle flame. Two possible methods are to have the mousetrap arm squeeze a small bellows to blow air on the flame, or to use the mousetrap to unwind a toy airplane propeller. The mousetrap does not count as one of the simple machines in your invention.
Secondly, ensure that you have at least four simple machines in your invention, such as levers, twisted rubber bands, or weighted pulley systems. Only the machines between the mousetrap and the candle count as part of your four machines. You may use any household items as long as they are appropriate for school.
Finally, place the candle and mousetrap one metre apart from each other. This specific distance is important, as deviations may impact the success of your invention. Once your machine is complete, set off the mousetrap to activate your mechanism and blow out the candle.
Good luck with your project!
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Four simple machines in the invention
To blow out a candle with a mousetrap, you must design and build a machine that will activate when the mousetrap is triggered, with the candle positioned one metre away. This machine must incorporate at least four simple machines, in addition to the mousetrap. Here are four simple machines that could be used in this invention:
- Lever: A lever is a simple machine consisting of a rigid bar that pivots on a fulcrum. In this invention, a lever could be used to transfer the force from the triggered mousetrap to another part of the machine, amplifying or changing the direction of the force as needed.
- Pulley: A pulley is a wheel with a groove for a rope or cable to move along. By incorporating a pulley system, the machine could utilise a rope or string to perform actions at a distance, such as knocking over the candle or activating another component of the machine.
- Wedge: A wedge is a simple machine used to separate or hold objects apart. In this invention, a wedge could be used to secure the mousetrap in place, or to lift or support other components of the machine.
- Screw: A screw is a type of inclined plane wrapped around a central shaft, and it can be used to hold objects together or to lift or move objects. In this invention, screws could be used to fasten different parts of the machine together, or to adjust the position of certain components.
By combining these simple machines with the mousetrap, a creative and functional invention can be designed to blow out the candle when the mousetrap is triggered.
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Lever, twisted rubber band, and pulley system
To blow out a candle with a mousetrap, you can create a contraption that utilises a lever, a twisted rubber band, and a pulley system. Here's a step-by-step guide on how to do it:
For this method, you will need a mousetrap, a lever, a rubber band, and a pulley system. Start by attaching the lever to the mousetrap. The lever will serve as an extension that you can use to trigger the mousetrap from a distance. You can use a variety of materials for the lever, such as a small stick or a lightweight rod. Ensure that the lever is securely attached to the trigger mechanism of the mousetrap.
Next, incorporate the twisted rubber band into your design. Take a rubber band and twist it tightly several times. This will create stored energy in the rubber band, which can be released when needed. Attach one end of the twisted rubber band to the mousetrap, specifically to the arm or bar that snaps shut when triggered. The other end of the rubber band will be attached to your pulley system.
Now, set up the pulley system. You can design your own pulley system using materials such as lightweight plastic, or you can use a pre-made pulley set like the ones used in mousetrap racers. The pulley system will allow you to transfer the force from the rubber band to the lever, creating a mechanical advantage. Attach the pulley to a fixed point above your setup, ensuring it can rotate freely.
Finally, connect the components. Attach a string or thin rope to the lever, threading it through the pulley. Secure the other end of the string to the twisted rubber band on the mousetrap. When you pull the string, it will activate the lever, setting off the mousetrap and releasing the stored energy in the rubber band. Ensure that the candle is placed directly in front of the mousetrap, so that when the mousetrap is triggered, the air from the snapping action blows out the candle.
With this creative contraption, you can impress your friends and family by blowing out a candle without using your breath. Remember to exercise caution when handling the mousetrap, as the snapping mechanism can be strong and may cause injury if not used properly.
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Mousetrap unwinds a toy plane propeller
A mousetrap can be used to unwind a toy plane propeller. The basic idea is to use the energy from a wound-up mousetrap spring to turn a drive axle, which will then rotate the propeller.
First, tie one end of a string to the mousetrap's snapper arm, and attach the other end to a drive axle. Turning the drive axle will cause the string to wind around it, compressing the mousetrap spring and storing energy. Ensure that the string is wound tightly, with no slack, to avoid a jerky motion when the propeller unwinds.
Once the string is fully wound, place the toy plane on a stable surface and release the mousetrap. The spring will pull the string from the drive axle, causing it to rotate and unwind, thus turning the propeller.
To increase the efficiency of the launch, consider using elastics to supplement the original spring in the mousetrap, providing higher release energy. Additionally, a lightweight plane made from materials like balsa wood will help maximize the distance and duration of the flight.
By following these steps and adjusting the design as needed, you can successfully unwind a toy plane propeller using a mousetrap, demonstrating the conversion of potential energy into kinetic energy of motion.
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Mousetrap car projects
To make a basic mousetrap car, you will need the following materials:
- A mousetrap
- Cardboard
- String
- Wooden dowel or skewer
- Hot glue
- Wheels (can be made from CDs, DVDs, or vinyl records)
- Cut out four wheels from cardboard or foam core, with the back wheels about double the diameter of the front wheels.
- Attach rubber bands or a balloon around each wheel for traction.
- Remove the hook and release trigger from the mousetrap.
- Attach the wooden dowel/skewer to the mousetrap using hot glue.
- Reattach the hook to the dowel/skewer.
- Attach string to the hook, ensuring it is long enough to reach the rear axle.
- Create a chassis from cardboard, slightly larger than the mousetrap, to form the base of the car.
- Attach the mousetrap to the chassis using duct tape or hot glue, ensuring the dowel/skewer is pointing forward.
- Wind the string around the axle, turning the wheels in the opposite direction you want the car to travel.
- Release the pressure, and the mousetrap car should be propelled forward!
There are many ways to improve and modify your mousetrap car to make it go faster or further. For example, you can experiment with different wheel sizes, reduce friction, or use lightweight wood for the chassis. These projects can be a great way to challenge your engineering skills and learn about the mechanical principles behind car movement.
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Frequently asked questions
It is a fun science experiment and a great educational experience.
The candle and mousetrap should be one meter apart from each other.
One way is to have the mousetrap arm squeeze a small bellows to blow air on the flame. Another way is to use the mousetrap to unwind a toy airplane propeller to produce enough wind to extinguish the candle.
You can use a candle snuffer, a wick dipper, or simply blow it out.
