An elevator has a massif 1000 kg what is the tension force on its cables when it is stationary

T=10000N (g=10 ms2)

If elevator is hanging from the cable a non contact force 'mg' is acting on it in downward direction .If the is cable is able to hold the lift in air then it would require force greater than or equal to force of gravitation i.e, 'mg' in opposite direction to prevent it from falling and counter balance force of gravitation i.e,'mg'. Now if force applied by cable is greater than 'mg' it will move up with some initial acceleration.But as lift is rest only force required will be equal to'mg'.

the answer is the first electromagnet (a). this is because it has more coils around the ferromagnetic material. increasing the number of coils increases the surface area in which the metal interacts with the current in the coil. this enables more atoms in the metal to become aligned hence becoming more magnetized.