Discuss Tension in cable. Boom is uniform and weighs 25000 newtons. boom is 8.0m long and cable is attached 2.0m from the outer end of the boom What is the force required to pull a loop out of the magnetic field at a constant velocity if B=20T into the page and v (to the left)=5cm/s. The dimension of the loop is .1m X .4m. The change in flux is .5Tm2 and R=.5 ohms. What is the power dissipated in the resistance of the loop? Contrast the work done by the force applied by pulling for 2.5 seconds to the energy dissipated in the circuit in 2.5 sec.