2 inclined plane problems, one with pulleys

  • #1

Homework Statement:

please check the attachment

Relevant Equations:

please check the attachment
For the a part of the first problem I did this: mgsinθ < µk*mgcosθ
Sinθ < µk*cosθ
Tanθ < µk so θ should be less than arctan µk
For part b of the first problem I found the net force on x axis and derived acceleration from there. Then I used that acceleration in Vf^2 = Vi^2 +2ad which gave me the result => d = -V0^2 / 2(gsinθ - µk*gcosθ)
I'm not really sure about these but at least I was able to get results. I'm really having problems with the second question though. I'd really appreciate some help. Thanks in advance.

physics hw5.PNG
 

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  • #2
haruspex
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Well done on the first question, but you need to show some attempt on the second, per forum rules.
 

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