4–15, 4–16 Force System Resultants (Chapter 4: Hibbeler Statics) Benam Academy

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ENGINEERING MECHANICS - STATICS, 13TH EDITION, R. C. HIBBELER
CHAPTER 4: Force System Resultants
PROBLEM: 4–15, 4–16
4–15. The Achilles tendon force of Ft = 650 N is mobilized when the man tries to stand on his toes. As this is done, each of his feet is subjected to a reactive force of Nf = 400 N. Determine the resultant moment of Ft and Nf
about the ankle joint A .
*4–16. The Achilles tendon force Ft is mobilized when the man tries to stand on his toes. As this is done, each of his feet is subjected to a reactive force of Nt = 400 N. If the resultant moment produced by forces Ft and Nt about the ankle joint A is required to be zero, determine the magnitude of Ft .
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