উত্তর সিলেক্ট করলে সঠিক ও ভুল দেখাবে।
ব্যাখ্যা ও সঠিক সমাধান
উত্তর:
90°
R = 2P cos(α/2) => √3P = 2P cos(α/2) => cos(α/2) = √3/2 => α/2 = 30° => α = 60° (Note: The question asks for the angle between the two forces, which is 90° based on the condition that the resultant is perpendicular to one of the forces, but the provided solution in the image calculates α=60° for a different condition. Transcribing as per image logic: 5cos90° = T₁cos0° + T₂cos150° => T₁ = √3/2 × 10 = 5√3).