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PhysicsIsRuff
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Homework Statement
A 75kg box slides down a 25.0 degree ramp with an acceleration of 3.60m/s[tex]^{2}[/tex]
a.) Find [tex]\mu[/tex]k between the box and the ramp.
b.) What acceleration would a 175kg box have on this ramp?
Homework Equations
Fapplied,y=(?N)(sin[STRIKE]0[/STRIKE])
Fapplied,x=(?N)(cos[STRIKE]0[/STRIKE])
Fg=mg
[tex]\sum[/tex]Fy=Fn+Fapplied,y-Fg-0
Fk=[tex]\mu[/tex]kFn
[tex]\sum[/tex]Fx=Fapplied,x-Fk=ma[tex]_{2}[/tex]
The Attempt at a Solution
Given: ax=3.60m/s
a.) Fg=(75kg)(9.81m/s[tex]^{2}[/tex])=736N
b.) m=175kg
I do not understand how to get Fk or Fn without first finding [tex]\mu[/tex], so I am stuck for now...
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