Failed to connect to MySQL: Access denied for user 'examnext_online'@'localhost' (using password: YES) A rough vertical board has an acceleration ‘a’ so that a 2 kg block pressing against it does not fall. The coefficient of friction between the block and the board should be - Sarthaks eConnect

A rough vertical board has an acceleration ‘a’ so that a 2 kg block pressing against it does not fall. The coefficient of friction between the block and the board should be:

`>g / a`

`<g / a`

`=g / a`

`>a / g`