Problem 9.1 The resistance R to penetration of a 0.25 kg projectile fired with a velocity of 600 m/s into a certain block of fibrous material is shown in the graph below. Represent this resistance by the dashed line and compute the velocity of the projectile for the instant when x = 25 mm if the projectile is brought to rest after a total penetration of 75 mm. R (N) Rmax 75 x (mm) Ans: 550 m/s ≤V ≤ 580m/s

Problem 9.1 The resistance R to penetration of a 0.25 kg projectile fired with a velocity of 600 m/s into a certain block of fibrous material is shown in the graph below. Represent this resistance by the dashed line and compute the velocity of the projectile for the instant when x = 25 mm if the projectile is brought to rest after a total penetration of 75 mm. R (N) Rmax 75 x (mm) Ans: 550 m/s ≤V ≤ 580m/s

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Question

Problem 9.1
The resistance R to penetration of a 0.25 kg projectile fired with a velocity of 600 m/s into a
certain block of fibrous material is shown in the graph below. Represent this resistance by the
dashed line and compute the velocity of the projectile for the instant when x = 25 mm if the
projectile is brought to rest after a total penetration of 75 mm.
R (N)
Rmax
75
x (mm)
Ans: 550 m/s ≤V ≤ 580m/s

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