Balanced and unbalanced force
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This document defines and provides examples of balanced and unbalanced forces. It states that balanced forces occur when two forces of equal magnitude act in opposite directions, resulting in no acceleration. Unbalanced forces occur when forces are not equal, resulting in acceleration in the direction of the larger force. Examples given include a book at rest on a table with balanced forces, and an object accelerating downwards or horizontally due to unbalanced gravitational and contact forces.
Balanced and unbalanced force
- 1. BALANCED FORCE and UNBALANCED FORCE FATIMA D. BALUNSAT
- 2. Magnitude • Refers to the size or the strength of force
- 3. Balance Force • If two individual forces acting on an object are equal in magnitude and in opposite direction.
- 4. • Balance forces cause an object to be at rest at a constant speed with zero acceleration.
- 5. Examples • A book resting on a table. F n W FfFa
- 6. • Fn (normal force) and W (weight) cancel each other out as they are of equal magnitude but act in the opposite direction. • Fa and Ff cancel each other out as they are of equal magnitude but act in the opposite direction. • The forces acting on the book are balanced. • The book remains at rest.
- 7. II. An object moving on a horizontal surface. Constant speed Object F f Fa
- 8. • Fa and Ff cancel each other out as they are of equal magnitude but act in the opposite direction. • The forces acting on the object are balanced. • It will continue to move at constant speed. • The acceleration of the object is zero.
- 9. UNBALANCED FORCE • An object is said to experienced an unbalanced force when a force acting on the object is not balanced by another force of equal magnitude but in opposite direction. • Unbalanced forces cause an object to accelerate.
- 10. Examples • An object accelerates downwardly. Smaller Fn Accelerates downwards in the direction of W Greater W
- 11. • Fn W • Fa and W do not cancel each other out as they are not equal. • The forces acting on the book are not balanced. • The objects will accelerate in the direction of W.
- 12. II. An object accelerates on a horizotal surface. Object moving with the acceleration in the direction of Fa greater Fa Smaller Ff
- 13. • Ff is less than Fa. • Ff and Fa do not cancel each other as they are not equal. • The forces acting on the book are not balanced. • The object will accelerate in the direction of Fa.
- 14. Reference • Tan Ming Eng, (2017 Reprint)“Conceptual Learning Physics 3rd Ed..GLM Pte. Ltd. Singapore
- 15. • THANK YOU!