Solve Ramp with Friction: Coefficient of Kinetic Friction

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SUMMARY

The discussion focuses on calculating the coefficient of kinetic friction for a mass sliding down an inclined plane and then along a level surface. The mass starts with an initial speed of 2.19 m/s and travels a distance of 2.5 m on the level part after descending 1.07 m at an angle of 29.70°. The solution involves applying the conservation of energy principle, specifically the equation E_initial = E_final + E_friction, where initial energy includes both kinetic and potential energy, and energy lost due to friction is accounted for in the calculations.

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Homework Statement



When mass M is at the position shown, it is sliding down the inclined part of a slide at a speed of 2.19 m/s. The mass stops a distance S2 = 2.5 m along the level part of the slide. The distance S1 = 1.07 m and the angle θ = 29.70°. Calculate the coefficient of kinetic friction for the mass on the surface

http://s876.photobucket.com/albums/ab327/rechitzy/?action=view&current=prob27a_MechEnWFriction.gif&newest=1

Homework Equations



E = K+U

The Attempt at a Solution



Don't even know where to start...
 
Last edited:
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You can use conservation of energy, taking into account the energy lost by friction.
 
ok i know what you are talking about but how do i do that?
 
Initial energy (potential+kinetic), minus the energy lost by friction, is equal to final energy (potential+kinetic). Write that out in an equation as your first step.
 
Ok, would this be KE1+PE1-Efr=KE2+PE2?
 
Thanks i already figured it out.
 

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