Effects of Force

IGCSE

1. IGCSE Physics Angel Yoanna

2. Force is a pull or a push on an object. It is exerted when two objects interact with each other. It is equal in size but opposite in direction. Effects of Force 12/22/2017 http://ap-physics.david-s.org

3. Formula of Force Force is measured in newtons (N). 12/22/2017 http://ap-physics.david-s.org   Where F - force m - mass of the object a -acceleration

4. Hooke’s Law – larger the force applied on a spring, the more it will extend. Hooke’s Law 12/22/2017 http://ap-physics.david-s.org

5. It is the net force. It is zero when: the object is stationary. the object moves at a constant speed. It is not zero when the object accelerates or decelerates. Resultant Force 12/22/2017 http://ap-physics.david-s.org

6. Also called Torque. It is the turning effect of force acting on a body about an axis. The SI Unit is newton meter (Nm) The CGS Unit is dyne-cm   Moment of Force (Torque) 12/22/2017 http://ap-physics.david-s.org

7. Where F is the force applied and d is the perpendicular distance Formula of Moment of Force 12/22/2017 http://ap-physics.david-s.org  

8. An object is said to be in equilibrium when the forces acting on it produces no changes in the state of rest or state of motion of the object. The two conditions for it would be: The resultant force on the object should be equal to zero. The moment of force acting on the body at a point should be zero. Conditions For Equilibrium 12/22/2017 http://ap-physics.david-s.org

9. The principle of moments is the sum of anti-clockwise moments about any point = sum of the clockwise about the same point. Two equal and opposite, parallel forces not acting on the same line, are called a couple. Moment of couple = force x perpendicular distance (between the line of action of both the forces) ... Conditions for Equilibrium 12/22/2017 http://ap-physics.david-s.org

10. http://ap-physics.david-s.org/effects-forces/ http://ap-physics.david-s.org/1-5-b-turning-effect/ http://ap-physics.david-s.org/1-5-c-conditions-equilibrium/ Google Images Bibliography 12/22/2017 http://ap-physics.david-s.org

11. Thank you! 12/22/2017 http://ap-physics.david-s.org