This preview shows page 1. Sign up to view the full content.
70 Chapt. 6 Newton’s Laws and Dynamics II
conservation of angular momentum keeps the spacecraft rotating at the constant rate. Let’s
not worry about torques and angular momentum here. But gravity of large spherical bodies
exerts virtually no torque on spacecraft, and so spacecraft in orbit are nearly torquefree.
People have often imagined giant pinwheel space stations where people work under artiFcial
gravity conditions on the wheel. Near zero artiFcial gravity would exist in a module at the
center of the wheel connected by spokes to the wheel. What is the artiFcial gravity force
on a motionless object? What way does the artiFcial gravity point? Which way do human
bodies point when standing normally in the wheel? What force stops standing people from
“falling” under the artiFcial gravity?
c) What’s the artiFcal gravitational Feld magnitudes for any
ω
and
r
for the centrifugal force
and the Coriolis force? Continue assuming a 2dimensional system for simplicity. Which
way does the centrifugal force gravitational Feld point?
d) Due to ordinary human motions, the Coriolis force can act on the inner ear causing dizziness,
This is the end of the preview. Sign up
to
access the rest of the document.
This note was uploaded on 11/16/2011 for the course PHY 2053 taught by Professor Buchler during the Fall '06 term at University of Florida.
 Fall '06
 Buchler
 Physics, Angular Momentum, Gravity, Momentum

Click to edit the document details