The electromagnet illustrated in Fig. C supports a mass of 11 kg. The cross-section of the magnetic parts of the magnetic circuit is 600  , and the excitation current is 2 A. Find the number of turns...

The electromagnet illustrated in Fig. C supports a mass of 11 kg. The cross-section of the magnetic parts of the magnetic circuit is 600
 , and the excitation current is 2 A. Find the number of turns in the magnetizing coil to achieve the required supporting force. The permeability of the core material varies with flux density as in the following table:

B (T) 0.36 0.44 0.48 0.60 0.72

 3300 3000 2900 2600 2300