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Solved: Unless otherwise stated, in the following problems
Chapter 3, Problem 2E(choose chapter or problem)
Unless otherwise stated, in the following problems we assume that the gravitational force is constant with \(g = 9.81\ m/sec^2\) in the MKS system and \(g = 32\ ft/sec^2\) in the U.S. Customary System.
A 400-lb object is released from rest 500 ft above the ground and allowed to fall under the influence of gravity. Assuming that the force in pounds due to air resistance is -10v, where v is the velocity of the object in ft/sec, determine the equation of motion of the object. When will the object hit the ground?
Questions & Answers
QUESTION:
Unless otherwise stated, in the following problems we assume that the gravitational force is constant with \(g = 9.81\ m/sec^2\) in the MKS system and \(g = 32\ ft/sec^2\) in the U.S. Customary System.
A 400-lb object is released from rest 500 ft above the ground and allowed to fall under the influence of gravity. Assuming that the force in pounds due to air resistance is -10v, where v is the velocity of the object in ft/sec, determine the equation of motion of the object. When will the object hit the ground?
ANSWER:
Step 1 of 6
In this problem,we have to find the time when the object hit the ground.