Given:
input force is

output force is

Required: calculate mechanical advantage
Step-by-step explanation:
to calculate the mechanical advantage of this jack
we will use formula that is given by
![Mechanical\text{ force advantage=}\frac{load(output\text{ force\rparen}}{effort(input\text{ force\rparen}}]()
plugging all the values in the above relation we get:

Thus, the mechanical advantage of this jack is 5.77.