In the adjoining figure if acceleration of $M$ with respect to ground is $a$, then
In the adjoining figure if acceleration of $M$ with respect to ground is $a$, then
- A
acceleration of $m$ with respect to $M$ is $2a$
- B
acceleration of $m$ with respect to ground is $2a \ sin (\alpha/2)$
- C
acceleration of $m$ with respect to ground is $a$
- D
acceleration of $m$ with respect to ground is $a\, tan \alpha$
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