Physics (10th Edition)

Published by Wiley
ISBN 10: 1118486897
ISBN 13: 978-1-11848-689-4

Chapter 4 - Forces and Newton's Laws of Motion - Problems: 3

Answer

a) +6 N b) -24 N c) -9.0 N

Work Step by Step

a) $F_{net}$ = ma = 3 x 5 = 15 N $F_{net}$ = $F_{1}$ + $F_{2}$ 15 = 9 + $F_{2}$ $F_{2}$ = +6 N b) $F_{net}$ = ma = 3 x -5 = -15 N $F_{net}$ = $F_{1}$ + $F_{2}$ -15 = 9 + $F_{2}$ $F_{2}$ = -24 N c) $F_{net}$ = ma = 3 x 0 = 0 N $F_{net}$ = $F_{1}$ + $F_{2}$ 0 = 9 + $F_{2}$ $F_{2}$ = -9 N
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