- Aerated Water
- Air Engine
- Air Table
- Are you Hot or Not?
- Balancing Act
- Bending Beams
- Block the gap
- Braille
- Bridge the Gap
- Chalk Wall
- Changing Faces
- Chaotic Motion
- Circle of Discovery
- Circle of Discovery- The Internet
- Circle of Discovery-Bridge Design
- Circle of Discovery-Ideas hub
- Circle of Discovery-Internet
- Circle of Discovery-Medicine
- Circle of Discovery-photography
- Circle of Discovery: Design - Earthquake
- Circulation
- Colour Wheel
- Communication Codes
- Communication Dishes
- Computer
- Crystallography
- Digestive System
- Down the Drain
- Electromagnetic Spectrum
- Fibre Optics
- Flight Simulator
- Gear Table
- Handshake Mirror
- Harmonograph
- High Flyer
- Hit the Target
- Horizontal Periscope
- Human Battery
- It's Electric
- Larger Than Life
- Lift Me Pull You
- Light Table
- Lock Box
- Making Waves
- Mini Harmonograph
- Mobile Phone
- Move It
- Nervous System
- Newtons Cradle
- Organ Pipe
- Organ Pipe Tune
- Oscillating Pendulums
- Pendulums
- People Power
- Periscope
- Prove Pythagoras
- Radar
- Radio Station
- Reactable
- Reflection Refraction
- Robot Arm
- Science of Sport
- Sensation
- Simple Camera
- Simple Circuits
- Smoke Tunnel
- Solar Energy
- Sound Waves
- Structures and Stresses
- Telescope
- The Exhibition
- The Eye
- The Lung and Chest Cavity
- The Wheel Race
- Thermal Imager
- Tornado
- Tower of Hanoi
- Universe Wall
- Up and Down
- Vertical Periscope
- Viscosity
- Viscosity Plungers
- Volume and Mass
- Vortex
- Watch Your Waste
- Weight Lifter
- Wheels Within Wheels
- Wind Tunnel
Wheels Within Wheels
Wheels within Wheels explores pulleys
Activity.... Do - Think - Learn
A pulley is a wheel that has been adapted to link different mechanisms. The direction and speed of movement depends on the number of pulleys, their sizes and how they are connected. Pulleys can be linked by ropes, chains or belts.
How will the direction and speed change when you turn a drive pulley?
How does one turn of a drive wheel affect the number of turns of the other pulleys?
Why are some pulleys linked by belts and chains?
The Science Bit
Pulleys are used within many industries. Some are used to help lift heavy objects, while others are used to make bigger or smaller wheels turn. These wheels may appear inside a mechanism that works several things, therefore saving time, energy and space. By turning one of the pulleys it will, in turn, move other parts of the display. The force from turning the first wheel is transferred through the pulley to other wheels it is attached to, which makes them turn as well.
Curriculum
Pushes and Pulls
- That pushing or pulling things can make objects start or stop moving
- To make suggestions about how objects can be made to move and to find out whether they were right
- That it is not only ourselves that make things move by pushing
- To ask questions about what is causing movement
Forces and Movement
- That pushes and pulls are examples of forces
Friction
- That the force between two moving surfaces in contact is called friction
- That friction can be useful
Forces in Action
- That several forces may act on one object
Last Modified: 25/07/2011
