- #1
AI Thread Summary
The discussion centers on deriving the equations of motion for a cylinder rolling on a fixed cylinder, with a focus on the condition when the normal force becomes zero. The user has formulated a differential equation but is unclear about the variables 'a' and 'b,' which are not defined in the problem statement. There is an emphasis on ensuring the kinematics are accurately understood, as this is a common area where mistakes occur. The urgency of the request is highlighted by the user's upcoming test. Clarifying the definitions of 'a' and 'b' is crucial for solving the problem effectively.
Kindly see the attached pdf. My attempt to solve it, is in it.
I'm wondering if my solution is right. My idea is this: At any point of time, the ball may be assumed to be at an incline which is at an angle of θ(kindly see both the pics in the pdf file). The value of θ will continuously change and so will the value of friction.
I'm not able to figure out, why my solution is wrong, if it is wrong .
TL;DR Summary: I would like to know the voltmeter readings on the two resistors separately in the picture in the following cases , When one of the keys is closed When both of them are opened (Knowing that the battery has negligible internal resistance)
My thoughts for the first case , one of them must be 12 volt while the other is 0
The second case we'll I think both voltmeter readings should be 12 volt since they are both parallel to the battery and they involve the key within what the...
Here is what I tried
This question was actually asked in one of our engineering entrances.
The answer was 1D.
My teachers say that we have to use μₘ/fₘ to get to this answer. I cannot understand why. I'll be really glad if you could tell me the exact definition of power (numerically) that works in all scenarios.
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