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Problem 12-22: Engineering Mechanics- Dynamics (Hibbeler 14th Edition)

Engineering Mechanics Dynamics · R.C. Hibbeler · Chapter 12

Course: Engineering Mechanics Dynamics Book: R.C. Hibbeler Chapter: Chapter 12

Question

Rectilinear Motion: Sandbag Released from an Ascending Balloon

This lesson applies constant-acceleration kinematics to an object released from a vertically ascending platform. Students determine the impact speed of the released object and the altitude of the ascending platform at the moment of impact by carefully setting up a signed coordinate system and using the standard kinematic equations.

Question:
A sandbag is dropped from a balloon that is ascending vertically at a constant speed of 6 meters per second. The bag is released with the same upward velocity of 6 meters per second at time equals zero, and it hits the ground when time equals 8 seconds. Determine: first, the speed of the bag as it hits the ground; and second, the altitude of the balloon at time equals 8 seconds.

In this lesson, you will learn to:
• Set up a signed coordinate system and correctly assign initial conditio

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