Calculating Distance Traveled on Incline with Kinetic Friction

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In summary, a box with an initial speed of 2.40 m/s is sliding up an incline with a 12.0° angle to the horizontal. The coefficient of kinetic friction between the box and the incline's surface is 0.180. To determine the distance the box travels before coming to rest, resolve the forces acting on it along and normal to the plane and use kinematics equations. Consider using the work-energy theorem in Physics to relate the work done by the frictional force to the change in the box's mechanical energy.
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LCB
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A box is sliding up an incline that makes an angle of 12.0° with respect to the horizontal. The coefficient of kinetic friction between the box and the surface of the incline is 0.180. The initial speed of the box at the bottom of the incline is 2.40 m/s. How far does the box travel along the incline before coming to rest?

I don't even know where to start. I'm guessing I should use kinematics, but where does the coefficient of kinetic friction and the angle fit into those?
 
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  • #2
Resolve the forces acting on the box along and normal to the plane. normal components will balance ( write the equation0 and tengential components will accelerates the box( write the equation)
Remamper friction is in against the motion.
 
  • #3
Have you tried an energy consideration? That is the work done by the frictional force should be equal to the change in the mechanical energy (it's kinetic and potential energy) of the box (this is called the work-energy theorem in Physics).
 

What is kinetic friction?

Kinetic friction is the force that acts between two surfaces in contact when one of the surfaces is moving relative to the other. It is caused by the microscopic roughness of the surfaces and results in the resistance to motion.

How is kinetic friction different from static friction?

Kinetic friction is the force that acts when two surfaces are already in motion, while static friction is the force that prevents two surfaces from starting to move. Static friction is typically greater than kinetic friction.

What factors affect the amount of kinetic friction?

The amount of kinetic friction depends on the roughness of the surfaces, the force pushing the surfaces together, and the velocity of the moving object. It also varies with the type of material and the temperature of the surfaces.

How can the coefficient of kinetic friction be determined?

The coefficient of kinetic friction can be determined by dividing the force of kinetic friction by the normal force between the two surfaces. This can be done by measuring the weight of an object and the force required to move it at a constant velocity.

How does distance affect kinetic friction?

Distance does not directly affect kinetic friction. However, as an object moves over a greater distance, the amount of work done against kinetic friction increases, resulting in a decrease in the object's kinetic energy. This, in turn, can cause the object to slow down or come to a stop.

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