Ex) Forces of 100. N and 30. N force act on a body.  

 

Largest Possible Resultant =

 

Smallest Possible Resultant = ?

 

 

Largest Possible Resultant   = 130 N   Smallest Possible Resultant   = 70. N

 

 

Subtract   Smallest Resultant   Add   Largest Resultant

 

 

 

Concurrent Forces

All forces pass through
a common point

Not Concurrent

 

Ex) Which pair of concurrent forces may have a resultant of 20 nt?

a)  5 nt + 10 nt

b)  20 nt + 20 nt

 c)  20 nt + 50 nt

d)  30 nt + 5 nt  

 

 

Hint: Find the range of possible resultants for each choice

     

	Max	Min
a) 5 nt + 10 nt	15 nt	5 nt
b) 20 nt  +  20 nt	40 nt	0 nt
c) 20 nt  +  50 nt	70 nt	30 nt
d) 30 nt  + 5 nt	35 nt	25 nt

 

Angle = 90°

  

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