The motor, M, pulls on the cable with a force F = (10t 2 +
Chapter 15, Problem 15-15(choose chapter or problem)
The motor, M, pulls on the cable with a force F = (10t 2 + 300) N, where t is in seconds. If the 100 kg crate is originally at rest at t = 0, determine its speed when t = 4 s. Neglect the mass of the cable and pulleys. Hint: First find the time needed to begin lifting the crate
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