Q1
What is a lever?
AA machine using a pivot point to lift
BA type of wheel
CA type of pulley
DA type of ramp
ICSEClass 6 (ICSE)ScienceCh 4 · Topic 2
Practice and Revision - Simple Machines
Let us practise and revise what we learned about simple machines. Simple machines, like levers, pulleys, wheels, and inclined planes, help u
Core concept
A lever, like a see-saw, uses a pivot point to help lift heavy objects with less force.
How it works
A pulley uses a wheel and rope to change the direction of force, making lifting objects easier, like in a well or crane.
Why it matters
An inclined plane, like a ramp, reduces the force needed to move objects to a higher level by spreading the work over a longer distance.
Key detail
These simple machines have been used since ancient times and remain fundamental to more complex machines today.
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Quick notes
• A lever uses a pivot point to lift objects.
• A see-saw is an example of a lever.
• A pulley changes the direction of force.
• Pulleys help lift objects, like in wells or cranes.
• An inclined plane reduces the force needed.
• A ramp is an example of an inclined plane.
• These machines have ancient origins.
• They remain fundamental to complex machines today.