Two forces P and Q acting at a point are such that if P is reversed, the direction of the resultant is turned through 90º . Then
A
P = Q
B
P =2Q
C
P = 
D
No relation between P and Q
Text Solution
Verified by ExpertsThe correct answer is:
A
= 0
P 2 + 
. 
+Q 2 – 
. 
=0
. 
= 
. 
P 2 – Q 2 = 0
P = Q
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