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What Are the Answers to These Magnetism Questions?
- Thread starter Sunturday
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The discussion focuses on solving magnetism-related homework questions using the formula F=ILB. Participants analyze the forces acting on a loop of wire in a magnetic field, emphasizing that the current direction is determined by the need to oppose changes in magnetic flux, in accordance with the law of conservation of energy. The current in the loop is described as clockwise to counteract the external magnetic field. Additionally, there is confusion regarding the magnetic field direction inside the loop compared to the outside. The conversation highlights the fundamental principles of electromagnetism and the behavior of currents in magnetic fields.
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siddharth23
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I think the answer to qn 4 is the current in the loop will flow in such a direction that the magnetic field produced by it will oppose the magnetic field of the magnet (law of conservation of energy). Hence, clockwise.
- #4
siddharth23
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For the first one, the current will flow in such a direction that the magnetic field produced by that current will oppose the motion of the loop to the right by applying a force to the left
F=ILB
F=ILB
- #5
Sunturday
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siddharth23 said:
But inside the loop the magnetic field would be the other way.
- #6
siddharth23
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Yup. Basically it tries to stay in it's original state of rest and oppose change.
I multiplied the values first without the error limit. Got 19.38. rounded it off to 2 significant figures since the given data has 2 significant figures. So = 19.
For error I used the above formula. It comes out about 1.48. Now my question is. Should I write the answer as 19±1.5 (rounding 1.48 to 2 significant figures) OR should I write it as 19±1. So in short, should the error have same number of significant figures as the mean value or should it have the same number of decimal places as...
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...
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...
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