Answer
$$M_x = 3(7) = 21$$
Work Step by Step
The $x-$moment of the plate is the product of the mass of the plate and the $y-$coordinate of the center of mass.
Thus, $$M_x = 3(7) = 21$$
Calculus (3rd Edition)
by Rogawski, Jon; Adams, Colin
Published by
W. H. Freeman
ISBN 10:
1464125260
ISBN 13:
978-1-46412-526-3
Chapter 9 - Further Applications of the Integral and Taylor Polynomials - 9.3 Center of Mass - Preliminary Questions - Page 483: 2
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