Answer
a) $F=-.4mg$
b) $F=2.4mg$
c) $F=1.4mg$
Work Step by Step
We use Newton's Second Law to find:
a) $F=m(a+g)=(m)(-1.4g+g)=-.4mg$
b) $F=m(a+g)=(m)(1.4g+g)=2.4mg$
$F=m(a+g)=(m)(1.4g+0)=1.4mg$
Essential University Physics: Volume 1 (3rd Edition)
by Wolfson, Richard
Published by
Pearson
ISBN 10:
0321993721
ISBN 13:
978-0-32199-372-4
Chapter 4 - Exercises and Problems - Page 68: 59
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