A block of mass m is placed on a smooth ...

A block of mass m is placed on a smooth inclined wedge ABC of inclination `theta`as shown in the figure .The wedge is given an acceleration `alpha` towards the righjt .The relation between `alpha`and `theta` for the block to remain stationary on the wedge is

`a- ( g)/( sin theta ) `

`a = g cos theta`

` a = ( g)/( cosec theta ) `

`a = g tan theta `

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