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CBSE Class 11-science Answered

what is net force?
Asked by suvrat sharma | 17 Sep, 2010, 12:00: AM
answered-by-expert Expert Answer
A net force, Fnet = F1 + F2 + … (also known as a resultant force) is a vector produced when two or more forces { F1, F2, … } act upon a single object. It is calculated by vector additionof the force vectors acting upon the object. A net force can also be defined as the overall force acting on an object.
 
Case 1. When force A and force B act on an object in the same direction (parallel vectors), the net force (C) is equal to A + B, in the direction that both A and B point
 
Case 2: When force A and force B act on an object in opposite directions (180 degrees between then - anti-parallel vectors), the net force (C) is equal to |A - B|, in the direction of whichever one has greater absolute value
 
 
Case 3: When the angle between the forces is anything else, then the component forces must be added up using the parallelogram rule.
 


Answered by | 17 Sep, 2010, 08:50: PM

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