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n forces are concurrent,each having a magnitude F lying in the same plane and symmetrically spaced.if two consecutive forces are removed the resultant of(n-2) forces is?

Asked by Sunita 9th June 2019, 9:47 AM
Answered by Expert
Answer:
If n concurrent forces of equal magnitude act on an object with equal angles between them,
such that each angle is equal to  ( 360/n )  degrees, then the resultant will always be zero.
 
if two consecutive forces are removed , reultant of two consecutive force is 2Fcos(θ/2),
where θ is the angle between the consecutive forces when all the forces are symmetrically placed
 
Since removal of two consecutive forces disturb the symmetry, zero resultant changes to -2Fcos(θ/2)
Answered by Expert 9th June 2019, 1:02 PM
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