Question

Osvaldo. Resume Course Home x C A 2.60-N Metal Ba C A 2.60-N Metal Ba C A 2.60-N Metal Ba C A 2 60- N Metal Ba Wellum.ecollege.com/course.html?courseld=15800055&HeplD-998d54d7c529193c7e75ab14ac6f136010001 Course Home <Homework #7 Problem 20.82 A 3.50-N metal bar, 1.50 m long and having a resistance of 10.0 12. rests horizontally on conducting wires connecting it to the circuit shown in (Figure 1). The bar is in a uniform, horizontal, 1.60-T magnetic field and is not attached to the wires in the circuit Part A What is the magnitude of the acceleration of the bar just after the switch is closed Express your answer in meters per second squared. %0ALP O ? 4- 13.44 Submit Previous Answers Request Answer * Incorrect; Try Again; 3 attempts remaining Figure ( 1 of 1 > Part B 25.00 What is the direction of the acceleration of the bar just after the switch is closed? 120.0 v 10.00

Answer 1

252 A o 120V & form - for Resistance of rod l = 1.5m mg = Wood a 3.50 B = 2.60T Mnod = 305 5 - – 0.357 kg 9.8 252 1 Net nesistance = 252 tse T 12 + <lar (Ret) = 302 Current (o)- - 120 Rnet 30 l = 4A liz ZA & Same lzzzA as both A & B have Potential difference of same Renstance. cussent through rod a LA (A force on bar = Fonce on bar = a 2x Lesxt. 6 el xß. 4.8N - mg = mxa 408- 3.5 = 9. 0.357 [acceleration = 3.6th | m/s2