Resultant Forces (OCR GCSE Physics A (Gateway Science Suite)): Flashcards
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What is a resultant force?
What is a resultant force?
A single force that has the same effect as all forces acting together
Formula for resultant force (opposing forces)
Formula for resultant force (opposing forces)
Larger force - smaller force
How to calculate resultant force
How to calculate resultant force
Find total force acting in each direction
Resultant when forces act in same direction
Resultant when forces act in same direction
Add the forces together
Resultant when forces act in opposite directions
Resultant when forces act in opposite directions
Subtract the forces
Two forces acting on a skydiver
Two forces acting on a skydiver
Air resistance and weight
Initial resultant on skydiver (no air resistance)
Initial resultant on skydiver (no air resistance)
833N down
Resultant: weight 833N, air resistance 350N
Resultant: weight 833N, air resistance 350N
483N down
Resultant force when forces are equal and balanced
Resultant force when forces are equal and balanced
0 (zero)
Condition for terminal velocity
Condition for terminal velocity
No resultant force, no acceleration
What do free body diagrams show?
What do free body diagrams show?
Forces and their directions acting on an object
Force at angle can be resolved as
Force at angle can be resolved as
Parallel and perpendicular components: and