Mand M/sqrt(3) are the magnetic dipole moments of the two magnets, which are joined to form a cross figure. Find the inclination of the system with the field, if their combination is suspended freely in a uniform external magnetic field B.

Mand M/sqrt(3) are the magnetic dipole moments of the two magnets, whi

1.	Mand M/sqrt(3) are the magnetic dipole moments of the two magnets, which are joined to form a cross figure. Find the inclination of the system with the field, if their combination is suspended freely in a uniform external magnetic field B.
Answer» `theta = 30^(@)` `theta = 45^(@)` `theta = 60^(@)` `theta = 15^(@)` Solution :TORQUE `(tau)` ACTING on magnet (1). `""tau_(1)=MBsintheta` `"Similarly"tau_(2)=SQRT(3)MBsintheta` `therefore""theta=60^(@)` But for equilibrium,`tau_(1)=tau_(2)` `therefore ""MBsintheta=sqrt(3)MBcostheta` `""tan theta=sqrt(3)=tan60^(@)` `therefore""theta=60^(@)`