Question

Part d please

rmul d fro ighs ? fie Let's make a magnetic launcher, and pick up a couple of frictionless rails (the lubricant formula is lice a large 3 Ω load resister, a 1.75 T electromagnet (salvaged from a da battery pack (Tesla was having a sale). The launch bar weighs 1.4 but we set the rails to be the diagram and turn on the power. FR# 3: we go down to our local Physics Problem Convenience store licensed), a suitable launch bar, maged MRI) and a 100 V in iti a sale). The launch bar weighs 1.4 kg and measures 0.6 m acros, separated by 0.5 m. We align the field underneath the bar as shown in a) Which way does the current need to flow through the circuit in order to accelerated to the right down the rails? How much current initially flowS in the circuit? xkxx xxx x x x xx x Current that flows initially is: V/R-1100/3- 33,.3 A; From RHR, current flows Clockwise b) What is the initial acceleration of the bar? a-33.3*0.5*1.75/1.4-20.8 m/s When the bar is traveling at 25 m/s, the battery is shut off, but the circuit is still a closed loop. The instant after the battery is shut off, what is the EMF measured in the loop? What is the current? Does the bar experience a force? How strong and in what direction? c) 1 = ε /R= 21.875/3 = 7.29 A Yes, the bar experiences a force F = ILB 7.29.0.5. 1.75 6.38 N, left (12) EC: Suppose the battery was still on and the EMF from part c was instead BACK EMF. What would be the acceleration on the bar under these conditions? a ILB/m (33.3-7.3)*0.5*1.75/1.4-16.25 m/s? d)

Answer 1