Study Question - Real Battery with bulb, current/resistance

AI Thread Summary
The discussion focuses on solving a physics problem related to the relationship between kinetic energy and potential energy in a system involving a battery and a bulb. The user has identified the answer as (D) but is unclear on the steps to reach that conclusion. Key concepts include the potential energy represented by ILB and the use of the force equation F = ILB to find the force on the rod. Additionally, accelerated motion formulas are suggested to calculate the speed after a given time. The conversation emphasizes understanding the energy transformations in the system to arrive at the correct answer.
exitwound
Messages
291
Reaction score
1

Homework Statement



Capture.JPG


Homework Equations



KE = 1/2mv^2
F_B=I(L x B)

The Attempt at a Solution



I have the answer to this, (D) but I don't know how to get it.

I know that the gained kinetic energy is equal to the lost potential energy of the system. What's the potential energy of the system? ILB? If so, how does that translate to answer D?
 
Physics news on Phys.org
You can find the force on the rod using F = ILB. Use accelerated motion formulas to find the speed after time t.
 
Thread 'Collision of a bullet on a rod-string system: query'

Thread 'Collision of a bullet on a rod-string system: query'

In this question, I have a question. I am NOT trying to solve it, but it is just a conceptual question. Consider the point on the rod, which connects the string and the rod. My question: just before and after the collision, is ANGULAR momentum CONSERVED about this point? Lets call the point which connects the string and rod as P. Why am I asking this? : it is clear from the scenario that the point of concern, which connects the string and the rod, moves in a circular path due to the string...
View full post »
Thread 'A cylinder connected to a hanged mass'

Thread 'A cylinder connected to a hanged mass'

Let's declare that for the cylinder, mass = M = 10 kg Radius = R = 4 m For the wall and the floor, Friction coeff = ##\mu## = 0.5 For the hanging mass, mass = m = 11 kg First, we divide the force according to their respective plane (x and y thing, correct me if I'm wrong) and according to which, cylinder or the hanging mass, they're working on. Force on the hanging mass $$mg - T = ma$$ Force(Cylinder) on y $$N_f + f_w - Mg = 0$$ Force(Cylinder) on x $$T + f_f - N_w = Ma$$ There's also...
View full post »

Similar threads

Current flowing in an open circuit
Replies
9
Views
1K
Optimum Battery (and Wire) to Power 10x Mini 1.5V Bulbs in Parallel?
Replies
6
Views
2K
Mechanisms Involved When Charging a Battery
Replies
10
Views
1K
Average battery current in battery charger
Replies
7
Views
897
How does a simple circuit work?
Replies
12
Views
1K
How to find the power consumed by the light bulb
Replies
19
Views
3K
Differences in the Brightness of bulbs for 2 separate circuits
Replies
1
Views
2K
Current, voltage : brightness of bulb in parallel or series
Replies
2
Views
4K
Expression for magnitude of the constant friction force
Replies
7
Views
950
A few questions concerning voltage, current and resistance
Replies
5
Views
2K

Hot Threads

Recent Insights

Back
Top