Question

What do you understand by the statement the machanical advantage of a machine is 7 and it's velocity ration 10

Answer 1

Mechanical Advantage means the ratio between the load and the effort.

M.A

= \frac{load}{effort} = 7(here)=
effort
load
​
=7(here)

Velocity Ratio means the ratio between the displacement of effort and displacement of load.

V .R.=

\frac{displacement \: of \: effort}{displacement \: of \: load} = 10(here)
displacementofload
displacementofeffort
​
=10(here)

Answer 2

it's a force multiplier.