Explanation Write down the equation for energy of a system. Δ E = − f k d (I) Here Δ E is the energy in the system, f k is the force due to friction and d is the distance. Write down the equation for force due to friction. f k = μ k m g (II) Here f k is the force due to friction, μ k is the coefficient of kinetic friction, m is the mass of the body, g is the acceleration due to gravity. Substitute (II) in (I) Δ E = − μ k m g d (III) Write down equation for the total energy of a system. Δ E = Δ K + Δ U (IV) Here Δ E is the total energy of the system, Δ K is the change in kinetic energy and Δ U is the change in potential energy of the system. As there is no height difference, the change in potential energy is zero. That is, Δ U = 0 (V) Write down the equation for change in kinetic energy. Δ K = 1 2 m v 2 − 1 2 m u 2 (VI) Here m is the mass of the body, u is the initial velocity and v is the final velocity

Bundle: Principles of Physics: A Calculus-Based Text, 5th + WebAssign Printed Access Card for Serway/Jewett's Principles of Physics: A Calculus-Based Text, 5th Edition, Multi-Term

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ISBN: 9781133422013

Author: Raymond A. Serway; John W. Jewett

Publisher: Cengage Learning

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Distance moved by a sled.

Solution Summary: The author writes down the equation for energy of a system. Delta E=-mu

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