Question

Out of the following options, the resultant of which pair cannot be 4N?

• A. 2N and 2N
• B. 3N and 8N
• C. 2N and 6N
• D. 4N and 8N

Answer 1

Answer: (B)

3N and 8N

In the options given above only the second option i.e. 3N & 8N will give $F_{max}=8+3=11N$ & $F_{min}=8-3=5N$. The resultant force always lies between maximum & minimum value & 4 is outside the range.
So $3N$ and $8N$ cannot give resultant as $4N$.