Regarding Friction/Normal force at 90(d) angle

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SUMMARY

The discussion focuses on calculating the necessary acceleration of a truck for a person to remain adhered to its front when impacted. The forces acting on the person include gravitational force and the normal force, with the coefficient of friction denoted as μ. The equation ΣF_y = -mg + μN is established, where N represents the normal force and must be determined to ensure the sum of forces equals zero. The problem involves analyzing forces in a non-inertial frame, emphasizing the importance of understanding pseudo forces in classical mechanics.

PREREQUISITES
  • Understanding of Newton's Laws of Motion
  • Familiarity with friction coefficients and their implications
  • Knowledge of force diagrams and vector components
  • Basic concepts of non-inertial reference frames
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  • Study the application of Newton's Laws in non-inertial frames
  • Explore the concept of pseudo forces in classical mechanics
  • Learn about frictional forces and their calculations in different scenarios
  • Investigate real-world applications of force analysis in vehicle dynamics
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This discussion is beneficial for physics students, particularly those studying classical mechanics, as well as educators and anyone interested in the dynamics of forces in collision scenarios.

PureSin
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Homework Statement


I will try to explain it this way:
A truck hits a person, the person now is stuck on the trucks front.
Forces working on the person are Gravity and the force that the truck is applying.
The coefficient of the friction is [tex]\mu[/tex].

What should be the truck's acceleration in order for the person to stay "stuck" on its front.2. The attempt at a solution
[tex]\Sigma[/tex]F[tex]\hat{y}[/tex] = -mg+[tex]\mu[/tex]*N
From what I understand we need [tex]\Sigma[/tex]=0. I have never dealt with a problem in which the surface is placed at a 90 degrees angle. Could you guys please provide a solution/hint for what N is.

Thank you. :)
 
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N = m*a...
.
m = mass of the person
a = acceleration of the truck...
.
On a X-Y system...
If the truck is approaching along the x-axis from right to left...
Tilt your head 90 deg to left...
Follow the truck...
Now since you're in a non inertial frame...
The pseudo force acting is similar to what gravity would be if this all were friction calculated between an object and a leveled ground...
.
I'm curious... Are you planning to kill someone...
(O_o)
 
Well thanks, I got it now.

Ask my Classical Mechanics professor, I'm starting to suspect that he has killing tendencies.
 

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