(5%) Problem 18: Consider the nail puller shown in the figure. Free-body dagram

Question

(5%) Problem 18: Consider the nail puller shown in the figure. Free-body dagram Ctheespertta.com ? 50% Part (a) What is the mechanical advantage of a nail puller where you exert a force 465 ? from the pivot and the nail is ,Sem on the side? Grade Summary Dadrans 0% Potential 100% MA cotan) asin acos0 atano acotan sinhO coshO tanhO cotamh 0%per attempt) DegreesRadians Hinh: 0, for a 0% dediction Hints remaning ? eted1 50% Part (b) what minimum force must you exert to apply a force of lese N tothe nair MacBook Pro 5 6 8

Explanation / Answer

formula for mechanical advantage is

MA = Fo/Fi

Li Fi = Lo Fo

MA= Fo/Fi = Li/Lo = 46.5/1.5 = 31

(b)

Li Fi = Lo Fo

Fi = Lo Fo/Li = 1.5(1050)/46.5

=33.87 N

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