Two masses m1 and m2(m1>m2) are connected by massless flexible and inestensible string passed over massless and frictionless pulley. The acceleration of centre of mass is
⎧⎪
⎪
⎪⎩m1−m2m1+m2⎫⎪
⎪
⎪⎭2g
m1−m2m1+m2g
m1+m2m1−m2g
Zero
A
m1−m2m1+m2g
B
⎧⎪
⎪
⎪⎩m1−m2m1+m2⎫⎪
⎪
⎪⎭2g
C
Zero
D
m1+m2m1−m2g
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