1.

In the figure shown if coefficient of friction is mu, then m_(2) will start moving upwards if

Answer»

`(m_(1))/(m_(2)) gt sin THETA - mu COS theta`
`(m_(1))/(m_(2)) gt sin theta + mu cos theta`
`(m_(1))/(m_(2)) gt mu sin theta - cos theta`
`(m_(1))/(m_(2)) gt mu sin theta + cos theta`

SOLUTION :(b) `m_(1)g gt m_(2)g sin theta+mum_(2)g cos theta`
`implies"" (m_(1))/(m_(2))gt sintheta+ mu cos theta`


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