the area of the large piston in a hydraulic jack is4.75 inches squared. the area

Question

the area of the large piston in a hydraulic jack is4.75 inches squared. the area of a small piston is 0.564 inchessquared. what foce must be applied to the small piston to lift 650lb. on the large piston .    i have two answers but confused a) 5474lbor b) 77.1789 lb f1/a1=f2/a2 the area of the large piston in a hydraulic jack is4.75 inches squared. the area of a small piston is 0.564 inchessquared. what foce must be applied to the small piston to lift 650lb. on the large piston .    i have two answers but confused a) 5474lbor b) 77.1789 lb f1/a1=f2/a2

Explanation / Answer

Given F1 = 650 lb

           A1= 4.75 in^ 2

           A2= 0.564 in^ 2

           F2= ?

We know ( F1 / A1 ) = ( F 2/ A2 )

From this F 2 = F 1 * A 2 / A 1

                      = 77.17 lb

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