Deepthi
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An internal force is a force acting within a body, such as the particles holding a baseball together. An external force acts from outside the body, like a baseball bat hitting a baseball or the friction from car wheels on the ground. Internal forces are exerted by one part of a structure on another part, while external forces come from outside the structure.
Deepthi
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- 3. TOPIC INTERNAL FORCE AND EXTERNAL FORCE 3
- 4. INTERNAL FORCE If the force acting within the body, it is internal force. 4
- 5. EXAMPLE FOR INTERNAL FORCE A baseball is a great example of an internal force. The particles holding the baseball together is an internal force. But a baseball bat hitting the baseball is not an internal force, because an internal force is a force exerted by one part of a structure on another. 5
- 6. EXAMPLE FOR INTERNAL FORCE 6
- 7. EXTERNAL FORCE If the force acting outside the body, it is external force. 7
- 8. EXAMPLE FOR EXTERNAL FORCE The friction created by the wheels of the car on the ground is an external force, as is the force holding the car up. 8
- 9. EXAMPLE FOR EXTERNAL FORCE 9