The Concepts In This Problem Are Similar To Those In Multiple Concept Example 4 Except That The Force Doing The Work In 1 (39.87 KiB) Viewed 22 times
The Concepts In This Problem Are Similar To Those In Multiple Concept Example 4 Except That The Force Doing The Work In 2 (22.56 KiB) Viewed 22 times
The Concepts In This Problem Are Similar To Those In Multiple Concept Example 4 Except That The Force Doing The Work In 3 (61.11 KiB) Viewed 22 times
The concepts in this problem are similar to those in Multiple-Concept Example 4, except that the force doing the work in this problem is the tension in the cable. A rescue helicopter lifts a 92.9-kg person straight up by means of a cable. The person has an upward acceleration of 0.619 m/s² and is lifted from rest through a distance of 7.42 m. (a) What is the tension in the cable? How much work is done by (b) the tension in the cable and (c) the person's weight? (d) Use the work-energy theorem and find the final speed of the person.
(a) Number (b) Number i (c) Number i (d) Number i i à Units Units Units Units <> <> <> <>
Under the influence of its drive force, a snowmobile is moving at a constant velocity along a horizontal patch of snow. When the drive force is shut off, the snowmobile coasts to a halt. The snowmobile and its rider have a mass of 134 kg. Under the influence of a drive force of 210 N, it is moving at a constant velocity whose magnitude is 6.35 m/s. The drive force is then shut off. Find (a) the distance in which the snowmobile coasts to a halt and (b) the time required to do so. (a) s= (b) t = I i <>
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