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Physics / University Physics 13 / Chapter 5 / Problem 24E

University Physics | 13th Edition | ISBN: 9780321675460 | Authors: Hugh D. Young, Roger A. Freedman

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CP CALC A 5.00-kg crate is suspended from the end of a

Chapter 8, Problem 24E

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QUESTION:

CP CALC? A 5.00-kg crate is suspended from the end of a short vertical rope of negligible mass. An upward force F(t) is applied to the end of the rope, and the height of the crate above its initial position is given by y(t) = (2.80 m/s)t + (0.610 m/s3)t3. What is the magnitude of F when t = 4.00 s?

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QUESTION:

CP CALC? A 5.00-kg crate is suspended from the end of a short vertical rope of negligible mass. An upward force F(t) is applied to the end of the rope, and the height of the crate above its initial position is given by y(t) = (2.80 m/s)t + (0.610 m/s3)t3. What is the magnitude of F when t = 4.00 s?

ANSWER:

Solution 24E dy =v (y)=2.8 m/s+(1.83 m/s )t 3 2 dt dvy 3 3 dt =a (y)=3.66 m/s +(1.83 m/s )t

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