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Get Full Access to Physics - 4 Edition - Chapter 6 - Problem 17
Get Full Access to Physics - 4 Edition - Chapter 6 - Problem 17

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# Force Times Distance II A block of mass slides with an ISBN: 9780321611116 152

## Solution for problem 17 Chapter 6

Physics | 4th Edition

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Problem 17

Force Times Distance II A block of mass slides with an initial speed on a smooth, horizontal surface. The block now encounters a rough patch with a coefcient of kinetic friction given by . The rough patch extends for a distance , after which the surface is again frictionless. (a) What is the acceleration of the block when it is in the rough patch? (b) What is the nal speed, , of the block when it exits the rough patch? (c) Show that (The signicance of this Fd =(mkmg)d = 1 2mvf2 - 1 2mvi2. vf d = 0.125 m mk = 0.260 vi = 4.33 m/s m = 1.95 kgFt = mv0v01 2mv229. IP Your friends 13.6-g graduation tassel hangs on a string from his rearview mirror. (a) When he accelerates from a stoplight, the tassel deects backward toward the rear of the car. Explain. (b)If the tassel hangs at an angle of 6.44relative to the vertical, what is the acceleration of the car? 30. In 29, (a) nd the tension in the string holding the tassel. (b) At what angle to the vertical will the tension in the string be twice the weight of the tassel? FIGURE 620 result will be discussed in Chapter 7, where we will see that is the kinetic energy of an object.)

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##### ISBN: 9780321611116

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