Math Problem Statement
Deixem caure sense velocitat inicial un objecte de 4 kg de massa per un pla inclinat 30o sobre l'horitzontal. El coeficient de fricció cinètic entre el cos i el pla és μ = 0,1. Troba l'energia cinètica del cos després d'haver recorregut una distància de 5 m pel pla inclinat.
Solution
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Math Problem Analysis
Mathematical Concepts
Kinematics
Work-Energy Theorem
Forces on an Inclined Plane
Formulas
Force of gravity parallel to the plane: F_parallel = mg sin(θ)
Friction force: F_friction = μ mg cos(θ)
Net work: W_net = W_gravity - W_friction
Kinetic energy: KE = W_net
Theorems
Work-Energy Theorem
Suitable Grade Level
Grades 10-12
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