Define resultant force.
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Resultant force:The net force which causes some effect on the object is called the resultant force. Resultant force = F1+F2+F3+F4
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Answered by
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Hey there !!!!
Different forces act on a body in different directions.If we combine all these forces resultant force is formed.It is the single force which has the same effect as all forces acting on the body.
R=F₁+F₂+F₃..............
How to calculate resultant force :
Case 1:
If two forces act on a object in the same direction then sum of those forces will be the resultant force acting on the body.
R=F₁+F₂
Example : 3N and 4N act on a body in same direction so
resultant force=3+4=7N
case 2:
If two forces act in opposite direction then resultant =F₁-F₂
If 4N and 3N act in opposite direction then
R= 4-3 =1N
Case 3:
If two forces F₁ and F₂ make an angle ∅ with each other then resultant force
R=(√F₁²+F₂²+2F₁F₂cos∅)
Case 4:
If the forces F₁ and F₂ are mutually perpendicular (∅ =90°)
R=(√F₁²+F₂²+2F₁F₂*0 ) (cos90=0)
R=√F₁²+F₂²
Example 3N and 4N are mutually perpendicular
R=(√3²+4²)=√25 =5N
Hope this helped you.................
Different forces act on a body in different directions.If we combine all these forces resultant force is formed.It is the single force which has the same effect as all forces acting on the body.
R=F₁+F₂+F₃..............
How to calculate resultant force :
Case 1:
If two forces act on a object in the same direction then sum of those forces will be the resultant force acting on the body.
R=F₁+F₂
Example : 3N and 4N act on a body in same direction so
resultant force=3+4=7N
case 2:
If two forces act in opposite direction then resultant =F₁-F₂
If 4N and 3N act in opposite direction then
R= 4-3 =1N
Case 3:
If two forces F₁ and F₂ make an angle ∅ with each other then resultant force
R=(√F₁²+F₂²+2F₁F₂cos∅)
Case 4:
If the forces F₁ and F₂ are mutually perpendicular (∅ =90°)
R=(√F₁²+F₂²+2F₁F₂*0 ) (cos90=0)
R=√F₁²+F₂²
Example 3N and 4N are mutually perpendicular
R=(√3²+4²)=√25 =5N
Hope this helped you.................
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