A block of mass m slides down on incline...

A block of mass m slides down on inclined wedge of same mass m as shown in figure . Friction is absent everywhere . Acceleration of centre of mass of the block and wedge is

zero

`(g sin^(2) theta)/(( 1 + sin^(2) theta))`

`(g cos^(2) theta)/((1 + sin^(2) theta))`

`(g "sin" theta)/((1 + "cos" theta))`

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