Force
- 1. ACTIONS! WHAT ARE THEY?
- 3. DEFINITION Force is a push or a pull acting on an object which changes or trends to change the state of the object.
- 4. UNIT OF FORCE ā¢ Newton ā¢ Named after Sir Isaac Newton ā great scientist ā¢ English ā mathematician, physicist and astronomer
- 5. OTHER UNITS ā¢ Dyne ā¢ Kilogram weight ā¢ Pound weight
- 9. CONTACT FORCE & TYPES ā¢ A force that can cause or change the motion of an object by touching it is called contact force. ā¢ Types: ā Muscular force ā Frictional force
- 10. Muscular force
- 11. MUSCULAR FORCE In previous activities, force is caused by the action of muscles. Hence this force is called muscular force.
- 12. FRICTIONAL FORCE
- 13. FRICTIONAL FORCE ā¢ The running person slow down due to the force acting between the person and the ground. It is the force of friction which causes the person to rest. The frictional force is always in a direction opposite to the direction of motion of the object.
- 14. NON-CONTACT FORCE & TYPES ā¢ A non-contact force is any force applied to an object by another body without any contact. ā¢ Types: ā Magnetic Force ā Gravitational Force ā Electrostatic Force
- 15. MAGNETIC FORCE
- 16. MAGNETIC FORCE A magnet can exert a force on another magnet without touching it. ā¢ Magnetic force is a non-contact force.
- 18. GRAVITATIONAL FORCE ā¢ When an object is thrown in upward direction, the object falls towards the earth. It is because the earth pulls them down. This force is called force of gravity. ā¢ It is an attractive force. ā¢ Example of non-contact force.
- 20. ELECTROSTATIC FORCE The force exerted by a charged body on another charged or uncharged body is known as electrostatic force. ā¢ This force acts when the bodies are not in contact.
- 21. SUMMARY ā¢ Force ā¢ Unit of force ā¢ Action of force and its effects ā¢ Types force ā¢ Contact force & its types ā¢ Non-contact force & its types