Help with Difficult Physics Homework Problem

Click For Summary
SUMMARY

The discussion centers on a physics homework problem involving net force calculations in the presence of magnetic forces. The user has identified the relevant parameters, including a magnetic field strength of 0.7T, a current of 36A, and a mass of 2kg. The equations used include Fnet=ma and the magnetic force equation Fb=ILB. The user successfully calculates the net force but struggles to understand the complete problem statement and the next steps required to solve it.

PREREQUISITES
  • Understanding of Newton's second law (F=ma)
  • Knowledge of magnetic forces and their calculations (Fb=ILB)
  • Familiarity with basic physics concepts such as mass, acceleration, and resistance
  • Ability to interpret and analyze physics problem statements
NEXT STEPS
  • Review the complete problem statement for clarity on the question being asked
  • Study the relationship between magnetic fields and forces in physics
  • Practice solving similar physics problems involving forces and accelerations
  • Explore resources on circuit analysis to understand the role of resistance in magnetic systems
USEFUL FOR

Students preparing for physics exams, educators looking for problem-solving strategies, and anyone seeking to deepen their understanding of forces in electromagnetic contexts.

dimpledur
Messages
193
Reaction score
0

Homework Statement


Here is the picture:
yessss.jpg

I have an upcoming test, and I cannot seem to get any questions like this one. Help is greatly appreciated.


I calculated the net force, such that Fnet=ma. There exists a magnetic force due to the current in the wire. The mass m is negligible, ie 0kg. Also, assume the only resistance is R1 and E=36V. M=2kg, and B is directed into the page at 0.7T. Also, d=0.8m. Thus,


Fb-Mg=ma
ILB-Mg=ma
(36A)(0.8m)(0.7T)-(2kg)(9.81N/kg)=ma
0.54N=ma

Hence, there is an acceleration to the right.

From here I go absolutely blank. I have spent a lot of hours on these types of questions but I cannot comprehend them. Can someone please give me a hand.
 
Physics news on Phys.org
What is the actual question? Please include the complete problem statement.
 

Similar threads

The solution of a problem regarding center of mass
  • · Replies 9 ·
Replies
9
Views
2K
Find acceleration of a pulley system
  • · Replies 6 ·
Replies
6
Views
9K
Acceleration and Tension in a Pulley System
  • · Replies 9 ·
Replies
9
Views
6K
Dynamics ramp and friction. Finding angle?
  • · Replies 4 ·
Replies
4
Views
2K
Inclined Plane Problem-- Solving for Theta
  • · Replies 2 ·
Replies
2
Views
3K
Acceleration of object with friction: Homework help
  • · Replies 1 ·
Replies
1
Views
2K
Motion and Forces [High School]
  • · Replies 5 ·
Replies
5
Views
2K
Tension force and acceleration Problem
  • · Replies 1 ·
Replies
1
Views
2K
with this tension problem -- Mass on an accelerating cable
  • · Replies 3 ·
Replies
3
Views
2K
What Went Wrong with Calculating Spring Force in This Physics Problem?
  • · Replies 23 ·
Replies
23
Views
5K