I ONLY NEED B$.$ The jack shown below is comprised of $5$ members and a spring $($AB$,$ BD$,$ CDE, GHJ$,$ EJ$,$ and spring

HL$)$ and is subjected to a uniform distributed load of $4000$ lb$/$ft$.$ The spring constant k $=20$ lb$/$in

and is stretched a distance of $3$ inches when the jack reaches equilibrium. Members CDE and

GHJ are parallel, and the force P is applied perpendicular to the end of the L$-$shaped member

AB$.$

A$)$ What is the force P required for the jack to maintain equilibrium?

B$)$ If the pins at B$,$ D$,$ E$,$ J$,$ and H cannot withstand a force of $2500$ lb$,$ will the jack be able to

support the loading shown? You must justify your answer with calculations. Which pin$($s$)$

will fail?

The jack shown below is comprised of $5$ members and a spring $($ AB$,$BD$,$CDE,GHJ$,$EJ$,$ and spring

HL $)$ and is subjected to a uniform distributed load of $4000$lb$//$ft$.$ The spring constant k$=20$lb$//$in

and is stretched a distance of $3$ inches when the jack reaches equilibrium. Members CDE and

GHJ are parallel, and the force P is applied perpendicular to the end of the L$-$shaped member

AB $.$

A$)$ What is the force P required for the jack to maintain equilibrium?

B$)$ If the pins at B$,$ D$,$ E$,$ J$,$ and H cannot withstand a force of $2500$ lb $,$ will the jack be able to

support the loading shown? You must justify your answer with calculations. Which pin$($s$)$

will fail?