statics

Question: When two equal forces are inclined at an angle $2\alpha $, their resultant is twice as great as when they act at an angle $2\beta $, then

1) $\cos \alpha =2\sin \beta $

2) $\cos \alpha =2\cos \beta $

3) $\cos \beta =2\cos \alpha $

4) $\sin \beta =2\cos \alpha $

Solution:

Explanation: No Explanation

Composition and resolution of forces and condition of equilibrium of forces

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