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| Resultant Force |
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| Any object can be made to move by the application of force. Many forces can act simultaneously on a body. For example, several people can jointly move a boulder but a strong person can move the same boulder all by himself. That is, the force applied by the strong man produces the same effect as that produced by the net force applied by all. The force applied by the strong man is the resultant force. |
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| The resultant force is that single force which when acting on a body produces the same effect as that produced by a number of forces. |
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| Several people can jointly move a boulder |
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| Strong person moving the same boulder all by himself |
| Resultant Force |
| F = F1 + F2 + F3 + F4 |
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