Simple Problem, I think theres not enough information

  • Thread starter Thread starter zZhang
  • Start date Start date
  • Tags Tags
    Information
Join the discussion
Ask a follow-up here, or get your own question answered by working scientists, mathematicians and engineers — people, not an autocomplete.
Real named experts · corrections over time · the nuance an AI answer skips
1 reply · 4K views
zZhang
Messages
11
Reaction score
0

Homework Statement



In Figure 8-50 (nothing important other than 1.2 m height difference, the higher level is completey flat), a block slides along a track from one level to a higher level after passing through an intermediate valley. The track is frictionless until the block reaches the higher level. There a frictional force stops the block in a distance d. The block's initial speed v0 is 6.0 m/s, the height difference h is 1.2 m, and the µk is 0.60. Find d.

Vo = 6.0 m/s
h = 1.2 m
µk = 0.60
m = ? (not given)

Homework Equations



Conservation of energy to get initial velocity upon reaching the higher level (this is already done and verified)

Then for the friction force we need the normal force (in this case weight of block), which is not given...

The Attempt at a Solution



So I already have the initial velocity at the higher level done and verified that part is correct, but I don't think the distance d it takes to come to a stop can be found since they never gave the weight of the block (so unknown magnitude of friction force).

Am I missing something here?
 
Last edited:
Physics news on Phys.org
oh nvm i randomly dropped a variable -____-