When t = 0, the external magnetic field is off.
Mgl = Wcoil l
0.5 gl = Wcoil l
Wcoil = 0.5 9.8 N
Let m be the mass that is added to restore equilibrium.
The magnetic field is activated when the switch is turned on.
Mgl + mgl = (ILC)l
m = 1 g
When t = 0, the external magnetic field is off.
Mgl = Wcoil l
0.5 gl = Wcoil l
Wcoil = 0.5 9.8 N
Let m be the mass that is added to restore equilibrium.
The magnetic field is activated when the switch is turned on.
Mgl + mgl = (ILC)l
m = 1 g