A spacecraft flies toward an asteroid whose trajectory threatens to impact the Earth. The spacecraft's weight on earth is 20,000 lb, and it flies with its center of gravity 160 ft from the asteroid's surface. The asteroid is a homogeneous pure iron of specific weight y = 491 lb/ft³ and has a 1290 ft diameter (assumed spherical) shape. (a) Convert all of the given physical quantities to SI units. Show your work and avoid online unit conversion calculators. (b) Determine the force of gravitational attraction (in Newtons) between the two bodies by treating the spacecraft as a particle. useful conversions: 1 lb = 4.448 N, 1 ft = 0.3048 m

A spacecraft flies toward an asteroid whose trajectory threatens to impact the Earth. The spacecraft's weight on earth is 20,000 lb, and it flies with its center of gravity 160 ft from the asteroid's surface. The asteroid is a homogeneous pure iron of specific weight y = 491 lb/ft³ and has a 1290 ft diameter (assumed spherical) shape. (a) Convert all of the given physical quantities to SI units. Show your work and avoid online unit conversion calculators. (b) Determine the force of gravitational attraction (in Newtons) between the two bodies by treating the spacecraft as a particle. useful conversions: 1 lb = 4.448 N, 1 ft = 0.3048 m

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

A spacecraft flies toward an asteroid whose trajectory threatens to impact the Earth. The spacecraft's
weight on earth is 20,000 lb, and it flies with its center of gravity 160 ft from the asteroid's surface.
The asteroid is a homogeneous pure iron of specific weight y 491 lb/ft³ and has a 1290 ft diameter
(assumed spherical) shape. (a) Convert all of the given physical quantities to SI units. Show your work
and avoid online unit conversion calculators. (b) Determine the force of gravitational attraction (in
Newtons) between the two bodies by treating the spacecraft as a particle. useful conversions: 1 lb
4.448 N, 1 ft = 0.3048 m
=
******

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