Recent content by SQUIDDO

In that case, I draw two vectors to represent the magnetic field directly under the wire due to the wire (A), and due to the Earth (B). Assembling them head-to-tail, tan(theta) = B/A So theta must be ~33 degrees, which is right! Thanks!

Problem Description: A hiker is reading a compass under an overhead transmission line that is 5.1m above the ground and carries a current of 807A in a horizontal direction from North to South. Assume the Earth's field is of the order 0.5*10^-4T. A) Determine the magnitude of the field produced...

I'm afraid I've already factored the center of mass into an extended free-body diagram and am still left scratching my head. I'm just not sure how to derive horizontal component forces from the system. I understand that upwards force must equal downwards force: m.g = V1 + V2 where V is the...

A door is attached to a frame by two hinges and is at equilibrium. All forces and torques are therefore balanced. The door has a mass of 10.5kg, a width of 1.1m, and the two hinges are 0.7m apart. Find the direction and magnitude of the horizontal force applied to the door by the top hinge? I...