Gears in a machine. Image credit

Gears in a machine. Image credit

ZIMSEC O Level Combined Science Notes: Machines

  • A machine is a device that makes work easier either by:
  • Reducing the effort (force) required to lift the load or
  • By changing the direction in which the effort is applied
  • Machines enable humans to accomplish tasks that would otherwise be impossible
Basic machines. Image credit

Basic machines. Image credit

  • Basic machines include:
  • Levers
  • Pulleys
  • Inclined planes
  • Gears
  • and the wheel and axle
  • More complex machines are built from a combination of these simple machines
  • For example :
  • A car combines basic machines such as wheels, axle,gears and levers
  • Machines are a part of everyday human life
  • Examples of more complex machines are:
  • Cars
  • Bicycles
  • Wheelbarrows etc

To access more topics go to the Combined Science Notes page

Quick NetOne, Telecel, Africom, And Econet Airtime Recharge

If anything goes wrong, chat with us using the chat feature at the bottom right of this screen