Q.

Two forces F1 = 1 N and F2 =  2 N act along the lines x = 0 and y = 0 respectively. Then the resultant of forces would be

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a

i^+  j^

b

3i^+  2j^

c

i^+  2j^

d

2i^+j^

answer is D.

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Detailed Solution

x = 0 means y-axis F1   =  j^

y = 0 means x-axis F2   =  2i^

so resultant F   =  F1+F2=2i^+j^

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Two forces F1 = 1 N and F2 =  2 N act along the lines x = 0 and y = 0 respectively. Then the resultant of forces would be