the length L of a spring is given by L=(3/4)F + 5 where F is applied force. What force F will produce a length of 8?



Answer :

MattD
L=8
F - searched force

[tex]L=\frac{3}{4}*F+5[/tex]
[tex]8=\frac{3}{4}*F+5[/tex]
[tex]8-5=\frac{3}{4}*F|*\frac{4}{3}[/tex]
[tex]3*\frac{4}{3}=F[/tex]
F=4

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