The mechanical advantage of a machine is 4 and its velocity ratio is 5. What is its percentage efficiency?

If the mechanical advantage of a machine is 6 and the velocity ratio is 8, what is its efficiency?

The mechanical advantage of a machine is 5 and its efficiency is 75%. A load of 300 kgf is lifted with the help of this machine up to the height of 15 m. Calculate the work done by the machine. (g = 10 m s^(-2) )

The mechanical advantage of a machine is 5 and its efficiency is 75%. A load of 300 kgf is lifted with the help of this machine up to the height of 15 m. Calculate the effort needed for this purpose.

The mechanical advantage of a machine is 2.What do you infer from this statement?

How is mechanical advantage related with velocity ratio for an actual machine ? State whether the efficiency of such a machine is equal to 1, les sthan 1 or more than 1.

If mechanical advantage of an inclined plane is 3 and its height is 2 m, then what will be its length?

Mechanical advantage (M.A.) of a simple machine ____ .

Find out the mechanical advantage of this simple machine.