Forces and machines

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Forces and machines

  1. 1. FORCES AND MACHINES BY:MARIA AND GEMMA
  2. 2. FORCES CAN PUT OBJETS INTO MOTION.A FORCE CAN PUT AN OBJECT INTO MOTION STOP AN OBJECT OR CHANGE THE WAY THAT IT MOVES .A FORCE CAN ALSO DEFORM OR BREAK AN OBJECT.
  3. 3. TYPES OF FORCE • CONTACT FORCES • Contact forces act on objects by making physical contact. • NON-CONTACT FORCES • Non-contact forces act on objects without making physical contact-.
  4. 4. GRAVITY
  5. 5. MACHINES A machine is an instrument that multiplies the force. • SIMPLE MACHINES • Have usually got one or two parts. • COMPLEX MACHINES • Have got many parts.
  6. 6. TYPES OS SIMPLE MACHINES A lever consists of a rigid bar that turns on a fixed point called the fulcrum. A pulley is a wheel with an axle in the centre and a rope that turns around. Ramps are inclined planes that we can use to go up and down . We can also use them to move heavy loads.
  7. 7. COMPLEX MACHINES A complex machine is a combination of two or more simple machines.

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