Centripetal acceleration acting on a parcel

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Discussion Overview

The discussion revolves around a physics homework problem involving centripetal acceleration acting on a parcel on an inclined seat in a moving car. Participants are examining the conditions under which the parcel will not slip, considering the forces at play and the angle of inclination.

Discussion Character

  • Homework-related

Main Points Raised

  • cmcd presents a force diagram and seeks verification of its correctness regarding the forces acting on the parcel.
  • There is a mention of a variable density function, which may relate to the problem but lacks context in the discussion.

Areas of Agreement / Disagreement

The discussion appears to be unresolved, with no clear consensus on the correctness of the force diagram or the implications of the density function presented.

Contextual Notes

There may be missing assumptions regarding the forces acting on the parcel, the role of friction, and the specific conditions under which the parcel remains stationary relative to the seat.

cmcd
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Homework Statement



A parcel sits on a seat angled θ to the horizontal. The car is traveling along a local radius of curvature of 80m and is traveling 20m/s at the dip. For what value of theta will the parcel not slip?

Will someone check that my force diagram is correct?
Thanks,
cmcd

http://s1372.photobucket.com/user/cmcdona22/media/001_zps29188e8a.jpg.html
 
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\rho_0
 
\rho(h)=\rho_0\exp^-\frac{\rho_0g_ph}{p_0}
 
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