- The rectangular loop of wire shown in Fig.has a mass of 0.15 g per centimeter of length and is pivoted about side ab on a friction less axis. The current in the wire is 8.2 A in the direction shown.Find the magnitude and direction of the magnetic field parallel to the y-axis that will cause the loop to swing up until its plane makes an angle of 30Deg with the yz-plane.
- F = IlBsin(Θ); F = mg
i tried to draw the directions of the parameters
The direction of B is clear since then the Force will be in the positive X direction. I am bit confused with the direction of Force, how would i draw it and the components. Is the gravitational force i have drawn is correct? Do we have better tools to draw these diagrams in 3D which will make life easy. Can i neglect the Force on ab? Please advise.