FORCE-SCI102 powerpoint presentation....

this lesson focuses on the Force

1. FORCE

2. WHAT IS FORCE? A push or pull upon an object resulting from the object’s interaction with another object . Measured in units of Newton (N) which is equivalent to the unit kg·m/s ². It is named after SIR ISAAC NEWTON. PUSH PULL

3. WHAT CAN FORCE DO? A force can make an object move. A force can change the direction of a moving object. A force can make a moving object to speed up. A force can stop a moving object. A force can change the shape of an object.

4. TYPES OF FORCES

5. Is a type of force that needs the objects to touch for the force to work. Two interacting objects are physically in contact with each other .

6. Is a type of force that can happen without the objects touching. Two interacting objects are not in physical contact with each other, but are able to exert a push or pull despite the physical separation.

7. Applied Force Force which is applied to an object by another object or by a person. Tensional Force or Tension Force which is transmitted through a string, rope or wire when it is pulled tight by forces acting at each end. Directed along the wire and pulls equally on the objects on either end of the wire

8. Normal Force Support force exerted upon an object which is in contact with another stable object Frictional Force Force exerted by a surface as an object moves across it or makes an effort to move across it Opposes the motion of the object Varies directly with load Independent of surface area

9. Special type of frictional force which acts upon objects as they travel through the air Always opposes the motion of the object Depends on surface area of object Air Resistance

10. Gravitational Force Force with which the earth, moon, or other massive body attracts an object towards itself Equal to the weight of the object as given by the equation: -gravitational force (weight) -mass -acceleration due to gravity (9.8m/ s² )

11. Mass - amount of matter that is contained by the object in units of kilograms (kg) Weight Force of gravity acting upon an object in units of newton (N) Change depending on location

12. Magnetic Force T he push or pull exerted by a magnet. Electrostatic force T he force that exist between all charged particles

13. Thank you for listening! AJA!!!