If a pushing force making an angle $\alpha$ with horizontal is applied on a block of mass $m$ placed on horizontal table and angle of friction is $\beta$, then minimum magnitude of force required to move the block is
If a pushing force making an angle $\alpha$ with horizontal is applied on a block of mass $m$ placed on horizontal table and angle of friction is $\beta$, then minimum magnitude of force required to move the block is
- A
$\frac{m g \sin \beta}{\cos [\alpha-\beta]}$
- B
$\frac{m g \sin \beta}{\cos [\alpha+\beta]}$
- C
$\frac{m g \sin \beta}{\sin [\alpha+\beta]}$
- D
$\frac{m g \cos \beta}{\cos [\alpha-\beta]}$
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