Landing Airplane Wheel Homework: Solving (a)-(e)

  • Thread starter Thread starter diracy
  • Start date Start date
  • Tags Tags
    Airplane Wheel
AI Thread Summary
The discussion revolves around solving a physics homework problem related to the landing wheel of an airplane. Key points include calculating the wheel's velocity when it stops slipping, determining the length of the skid mark, and computing energy lost to friction. The user successfully completed parts (a), (b), and (c) but is seeking assistance with parts (d) and (e), specifically regarding energy loss comparisons and the correct distance for calculating energy loss. Guidance is requested to clarify these remaining components of the problem.
diracy
Messages
20
Reaction score
0

Homework Statement


Consider a wheel of a landing airplane. The wheel has mass M, radius
R, and moment of inertia around its axis \alphaMR^2.
The wheel lands on the ground with horizontal
velocity v, but does not rotate before it touches the ground.
(a) Calculate the velocity of the wheel when it stops slipping. Assume that the wheel presses on
the ground with force Mg and the coecient of friction is . Once the wheel no longer slips it
moves with constant velocity. (b) Find the length of the skid mark this wheel would leave on the
runway. (c) Compute the amount of energy lost to friction by subtracting the nal kinetic energy
of rotation and linear motion from the kinetic energy of the wheel before it hit the ground. (d)
Compare the energy loss to Mg times the length of the skid mark. (These two should not be
the same!) (e) Figure out how to calculate the energy loss by multiplying the friction force by a
distance. Figuring out which distance it is requires some thought if you haven't seen this before

Homework Equations


The Attempt at a Solution



I was able to do (a), (b), and (c) but I am stuck with d and e. Can someone give me some guidance?
 
Last edited:
Physics news on Phys.org
any help here?
 
Thread 'Help with Time-Independent Perturbation Theory "Good" States Proof'
(Disclaimer: this is not a HW question. I am self-studying, and this felt like the type of question I've seen in this forum. If there is somewhere better for me to share this doubt, please let me know and I'll transfer it right away.) I am currently reviewing Chapter 7 of Introduction to QM by Griffiths. I have been stuck for an hour or so trying to understand the last paragraph of this proof (pls check the attached file). It claims that we can express Ψ_{γ}(0) as a linear combination of...
Back
Top