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Physics_girl1
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Homework Statement
a) if a force of 86N parallel to the surface of a 20 degree incline plane will push a 120N block up the plane at constant speed, what force parallel to the plane will push it down at constant speed?
Homework Equations
[tex]\Sigma[/tex]F(X)=F(A)-F(fr)-mgcos[tex]\vartheta[/tex]=0
[tex]\Sigma[/tex]F(Y)=F(n)-mgsin[tex]\vartheta[/tex]=o
where F(A)= force applied, F(fr)= friction force, F(n)= normal force, mg=weight, F(X)= sum of forces in x direction, and F(Y)- sum of forces in y direction
The Attempt at a Solution
normal force=41.0424
friction force=26.73
my answer is -86.0331
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