Resultant Forces
2 guided lessons · 18 checks · 1. Forces & Motion → Forces, Movement & Changing Shape
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Combining forces along a line
One object, several forces, one outcome: the resultant force is the single force that sums up all of them. Along a straight line the arithmetic is two rules — same direction adds, opposite directions subtract — and the answer must always carry a direction of its own.
What you know already
Several forces can grip one object at once, yet the object responds to a single net effect. This note names that net effect, builds the along-a-line arithmetic that computes it, and then meets the everyday force that quietly opposes every slide: friction.
Key points of understanding
- The resultant force is the single force that describes the combined action of all the forces on a body.
- Forces along the same line add when they point the same way and subtract when they oppose.
- Equal opposing forces leave no resultant: the forces are then described as balanced.
- The resultant fixes both the size of the net force and the direction of the resulting motion.
- A complete resultant answer states the magnitude in newtons and the direction in words.
Diagram showing the resultant forces on three different objects
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1.Combining forces along a line
One object, several forces, one outcome: the resultant force is the single force that sums up all of them. Along a straight line the arithmetic is two rules — same direction adds, opposite directions subtract — and the answer must always carry a direction of its own.
Diagram showing the resultant forces on three different objects
Key points
- The resultant force is the single force that describes the combined action of all the forces on a body.
Guided content from the SME authoring corpus — note rn_K3p2R3ykwwvHV9dp, pinned at bfae99778094 · promoted SyllabAI/syllabai-resources b3caaaa90c5e
