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Two equal forces (P each) act at a point inclined to each other at an angle of `120^@`. The magnitude of their resultant isA. `P//2`B. `P//4`C. PD. 2P |
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Answer» Correct Answer - C The resultant force or two equal forces `sqrt(P^(2) +P^(2) +2P P cos 120^(@))` ` = sqrt( 2P^(2) + 2P^(2) xx (-(1)/(2)))` `= sqrt(2P^(2) - P^(2)) = sqrt(P^(2)) = P` |
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