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Is it possible for a friction force to increase the
Chapter 9, Problem 7DQ(choose chapter or problem)
QUESTION:
Is it possible for a friction force to increase the mechanical energy of a system? If so, give examples.
Questions & Answers
QUESTION:
Is it possible for a friction force to increase the mechanical energy of a system? If so, give examples.
ANSWER:Solution 7DQ Step 1: Mechanical energy = Kinetic energy + Potential energy Total energy of the system = Kinetic energy + Potential + Work done against frictional force Therefore, TE = KE + PE + W Rearranging the equation, TE - W = KE+PE So, we can write. Mechanical energy = TE - W