A simlple machine of velocity ratio 20 is used to lift a load of 600N by applying effort of 40N. Calculate the mechanical advantage and efficiency Of the machine.​

Explanation:

Solution,

Velocity ratio(VR)= 20

Load(L)= 600 N

Effort(E)= 40 N

Mechanical Advantage (MA)= ?

Efficiency= ?

Now,

MA= L/E=600/40=15

Efficiency= MA/VR×100%=15/20×100%=75%

So, the mechanical advantage and efficiency of the machine are 15 and 75% respectively.

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