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1. Homework Statement
Consider the following two scenarios with the same box sliding up two differently inclined ramps. The coefficient of static friction is 0.7, the coefficient of kinetic friction 0.5. Eventually, the box will stop. Up to what maximum angle of the incline (in degrees) would it not slide back down?
2. Homework Equations
sin = o/h
cos= a/h
tan= o/a
3. The Attempt at a Solution
cos1 (.7/.5) = error
cos1 (.5/.7)= 44.41 = wrong
cos1 (.4) = 66.42= wrong
cos1 (1) = 0 so I thought it could also equal 360 so I added 360+66.42 = 426.42 = wrong
sin1 (.7/.5)= error
sin1 (.5/.7) =45.58 (I think its wrong)
tan1 (.7/.5) = 54.46 = wrong
tan1 (.5/.7)= 35.53 = scared to try to see if its wrong
HELP PLEASE !!!!!!!
Consider the following two scenarios with the same box sliding up two differently inclined ramps. The coefficient of static friction is 0.7, the coefficient of kinetic friction 0.5. Eventually, the box will stop. Up to what maximum angle of the incline (in degrees) would it not slide back down?
2. Homework Equations
sin = o/h
cos= a/h
tan= o/a
3. The Attempt at a Solution
cos1 (.7/.5) = error
cos1 (.5/.7)= 44.41 = wrong
cos1 (.4) = 66.42= wrong
cos1 (1) = 0 so I thought it could also equal 360 so I added 360+66.42 = 426.42 = wrong
sin1 (.7/.5)= error
sin1 (.5/.7) =45.58 (I think its wrong)
tan1 (.7/.5) = 54.46 = wrong
tan1 (.5/.7)= 35.53 = scared to try to see if its wrong
HELP PLEASE !!!!!!!
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