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# Dynamics particle

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### Dynamics particle

1. 1. <ul><li>ASSALAMUALAIKUM WR.WB </li></ul><ul><li>AFTER LEARNING THIS CHAPTER, YOU ARE EXPECTED TO BE ABLE: </li></ul><ul><li>EXPLAIN THE DEFINITON OF FORCE,WEIGHT AND FRICTION </li></ul><ul><li>DRAW THE FORCES DIAGRAM THAT ACTS UPON AN OBJECT </li></ul><ul><li>USE THE NEWTON’S LAW PRINCIPLE TO SOLVE MANY PROBLEM </li></ul>
2. 4. FORCE Can change the state of motions, forms and sizes an object
3. 5. FORCE IS THE VECTOR MAGNITUDE YOU MUST BE REMEMBER TO APPLAY THE FORMULA OF RESULTANT VECTOR
4. 6. NORMAL FORCE N N N θ The normal force is the contact force wich acts in perpendicular direction to the contact plane if two object are in contact of each other
5. 7. WEIGHT Is the gravitional force works on an object which near the earth surface w <ul><li>FRICTION </li></ul><ul><li>Couses the resistance to the motion of a body </li></ul><ul><li>Opposes the direction of objects motion </li></ul><ul><li>Distinguish static frictional and kinetic frictional </li></ul>F f
6. 8. Newton’s law First law Σ F = 0 Object at rest V = 0, a = 0 Object moves in uniform rectilinear motion V ≠ 0, a = 0
7. 9. Newton’s second law If there is rsultant 0f the force acting upon it, couse the object experiences change of velocity ( change magnitude, direction or both ) Σ F = m.a Uniformly Constan acceleration
8. 10. NEWTON’S THIRD LAW When two objects A and B interact each other, They exert forces upon each other
9. 11. Another kinds of force Centripetal force Circular motion