Quick Question

  • Thread starter Tonyt88
  • Start date
  • #1
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You have a cylinder (with radius R) rolling horizontally on a surface with kinetic friction of u(mu). I understand that the horizontal acceleration is u*g b/c:

ma = u*(mg)
a = u*g

and then you have

a = r (alpha_z)

thus I'd figure alpha_z is just u*g/R, but the book gives a solution of:

-2 u*g/R

Basically, what's the reasoning?
 

Answers and Replies

  • #2
62
0
Also, I have this problem related to this previous problem:

The cylinder is initially slipping completely, so initially omega_z = omega_o but v_x = 0. Rolling without slipping sets in when v_x = R(omega_z). Calculate the distance the cylinder rolls before slipping stops.
 
  • #3
berkeman
Mentor
60,436
10,749
Cool.

Oh yeah, could you please use the homework posting template? Thanks.
 

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