if two equal vectors acting at …
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Gaurav Seth 5 years, 5 months ago
Let R , Q are two vector which magnitude is equal also resultant of it also equal to either
e.g | R | = | Q |
and resultant = R + Q
magnitude of resulatant = | R | = | Q|
so, | R | = | R + Q |
| R | = √( | R|² + | Q|² +2|R | |Q| cos∅)
take square of both sides
R² = R² + Q² + 2|R| |Q| cos∅
put | R| =|Q|
R² = R² + R² +2R² cos∅
cos∅ = -1/2
∅ = 2π/3
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