MCQ
Find the acceleration of $B$.
- A$\frac{a \sin \alpha_1}{\cos \alpha_2}$
- ✓$\frac{\operatorname{acos} \alpha_1}{\cos \alpha_2}$
- C$\frac{ a \cos \alpha_2}{\cos \alpha_1}$
- D$\frac{\cos \alpha_1}{\cos \alpha_2}$
✓
Answer
Correct option: B.
$\frac{\operatorname{acos} \alpha_1}{\cos \alpha_2}$
b
$b \cos \alpha_2= a \cos \alpha_1$
$b \cos \alpha_2= a \cos \alpha_1$
$b =\frac{ a \cos \alpha_1}{\cos \alpha_2}$
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