9. Work & Energy
Net Work & Work-Energy Theorem
12:57 minutes
Problem 10a
Textbook Question
Textbook QuestionCALC A 2.6 kg block is attached to a horizontal rope that exerts a variable force Fx=(20−5x) N, where x is in m. The coefficient of kinetic friction between the block and the floor is 0.25. Initially the block is at rest at x=0 m . What is the block's speed when it has been pulled to x=4.0 m?
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