- #1
adorrea
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Homework Statement
A block begins to slide down a ramp after being elevated to an angle of 53.75 degrees. What is the coefficient of static friction?
How do i find the coefficient of friction
- Thread starter adorrea
- Start date
AI Thread Summary
To find the coefficient of static friction for a block sliding down a ramp at an angle of 53.75 degrees, the relevant equations involve the normal force and net force on the incline. The normal force can be calculated using the formula normal force = m * g * cos(angle), while the net force is given by net force = m * g * sin(angle). The mass of the block is not necessary for the calculation, as it will cancel out in the equations. It is also assumed that the acceleration is zero at the point of static friction. Understanding these principles allows for the determination of the coefficient of static friction without needing the block's mass.
A block begins to slide down a ramp after being elevated to an angle of 53.75 degrees. What is the coefficient of static friction?
- #2
Villyer
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What formulas do you know regarding incline planes and friction?
- #3
adorrea
- 4
- 0
normal force=m*g*sin of angle and net force= m*g* cos of angle
- #4
adorrea
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will i have to find the mass of the block first
- #5
tiny-tim
Science Advisor
Homework Helper
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hi adorrea! 
no, call the mass "m" …
(and assume the acceleration is 0)
adorrea said:
no, call the mass "m" …
it'll cancel out in the end 
(and assume the acceleration is 0)
Hello guys this is what I tried so far. I used the UTS to calculate the force it needs when the rope tears.
My idea was to make a relationship/ function that would give me the force depending on height. Yeah i couldnt find a way to solve it.
I also thought about how I could use hooks law (how it was given to me in my script) with the thought of instead of having two part of a rope id have one singular rope from the middle to the top where I could find the difference in height.
But 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.
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...
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