What are the differently types of motion in a bicycle?
1 answer:
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Answer:
The slower the train is moving, the less are the changes of the magnetic flux, thus the eddy currents become weaker.
Explanation:
A magnetic brakes is not a very efficient way of braking when a train is moving slowly because at low speeds, the changes in the magnetic flux are very less and so it causes the eddy current to become weaker.
Let us find the drag force which is proportional to the velocity of two conducting plates.
The EMF that is induced in the eddy currents are :
The force which is due to the induced magnetic field is,
Therefore,
Here, force is directly proportional to the velocity of the two conducting plates.
Therefore, we can say that when the speed of the train is low, the magnetic flux changes are less and thus the eddy currents are weaker.
Complete Question
The diagram of with this question is shown on the first uploaded image
Answer:
The value is
Explanation:
From the question we are told that
The mass of the rock is
The length of the string is
The angle the string makes horizontal is
The angle which the projection of the string onto the xy -plane makes with the positive x-axis is
The angular velocity of the rock is
Generally the radius of the circle made by the length of the string is mathematically represented as
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Generally the resultant tangential velocity is mathematically represented as
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Generally the tangential velocity along the x-axis is
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The negative sign show that the velocity is directed toward the negative x-axis
Generally the tangential velocity along the y-axis is
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Generally the tangential velocity along the y-axis is
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Generally the tangential velocity at that instant is mathematically represented as
