A small airplane flying horizontally with a speed of 175 mi/hr at an altitude of 265 ft above a remote valley drops an emergency medical package at A. The package has a parachute which deploys at B and allows the package to descend vertically at the constant rate of 7.7 ft/sec. If the drop is designed so that the package is to reach the ground 23 seconds after release at A, determine the horizontal lead L so that the package hits the target. Neglect atmospheric resistance from A to B.

A small airplane flying horizontally with a speed of 175 mi/hr at an altitude of 265 ft above a remote valley drops an emergency medical package at A. The package has a parachute which deploys at B and allows the package to descend vertically at the constant rate of 7.7 ft/sec. If the drop is designed so that the package is to reach the ground 23 seconds after release at A, determine the horizontal lead L so that the package hits the target. Neglect atmospheric resistance from A to B.

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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Conservation of Energy

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Question

Part 1
Calculate the time t₁ at which the parachute opens.
Target
Answer: t₁
B.
=
-L-
sec
175 mi/hr
A
265'

A small airplane flying horizontally with a speed of 175 mi/hr at an altitude of 265 ft above a remote valley
drops an emergency medical package at A. The package has a parachute which deploys at B and allows the
package to descend vertically at the constant rate of 7.7 ft/sec. If the drop is designed so that the package is
to reach the ground 23 seconds after release at A, determine the horizontal lead L so that the package hits
the target. Neglect atmospheric resistance from A to B.
B
Target-
L
175 mi/hr
A
265'

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