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Question: Two forces \(\overset{\rightarrow}{F_{1}}\) and \(\overset{\rightarrow}{F_{2}}\) are acting on a par...

Two forces F1\overset{\rightarrow}{F_{1}} and F2\overset{\rightarrow}{F_{2}} are acting on a particle. Magnitude of resultant of these force is |F1\overset{\rightarrow}{F_{1}}|.

Then : (i) |F2\overset{\rightarrow}{F_{2}}| may be zero.

(ii) |F2\overset{\rightarrow}{F_{2}}| may not be zero.

Select correct one -

A

Only (i) is correct

B

Only (ii) is correct

C

Both (i) and (ii) will be correct

D

Neither (i) nor (ii) will be correct

Answer

Both (i) and (ii) will be correct

Explanation

Solution

If |F1\overset{\rightarrow}{F_{1}}| = |F2\overset{\rightarrow}{F_{2}}| and angle between these two forces is 120º then resultant is equal |F1\overset{\rightarrow}{F_{1}}| or |F2\overset{\rightarrow}{F_{2}}|.