The 0.5-lb projectile A is subjected to a drag force of magnitude kv2, where the constant k = 0.0003 lb-sec2/ft2. This drag force always opposes the velocity v. At the instant depicted, v = 210 ft/sec, 0= 41°, and r = 495 ft. Determine the corresponding values of " and 0. y Answers: r = kv2 0= i i 8 T 17° ft/sec² rad/sec²

The 0.5-lb projectile A is subjected to a drag force of magnitude kv2, where the constant k = 0.0003 lb-sec2/ft2. This drag force always opposes the velocity v. At the instant depicted, v = 210 ft/sec, 0= 41°, and r = 495 ft. Determine the corresponding values of " and 0. y Answers: r = kv2 0= i i 8 T 17° ft/sec² rad/sec²

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

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Section: Chapter Questions

Problem 1.1MA

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Conservation of Energy

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Question

The 0.5-lb projectile A is subjected to a drag force of magnitude kv2, where the constant k = 0.0003 lb-sec²/ft2. This drag force always
opposes the velocity v. At the instant depicted, v = 210 ft/sec, 0 = 41°, and r = 495 ft. Determine the corresponding values of r and 0.
y
|
ku²
Answers:
i
M.
0 = i
0
T
A
V
170
--x
ft/sec²
rad/sec²

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