A magnetic needle lying parallel to a magnetic field requires `W units` of work to turn it through `60^(@)`. The torque needed to maintain the needle in this position will be

A magnetic needle lying parallel to a magnetic field requires X units of work to turn it through 60^(@) . The torque necessary to maintain the needle in this position is

A magnetic needle lying parallel to a magnetic field requires X units of work to turn it through 60^(@) . The torque necessary to maintain the needle in this position is

A magnetic needle lying parallel to a magnetic field requires W unit of work to turn it through 60^(@) . How much torque should be needed to maintain the needle in this position ?