Table of Contents
What is the relationship between mechanical advantage velocity ratio and efficiency?
Mechanical advantage is equal to the product of velocity ratio and efficiency. For a machine of a given design, the velocity ratio does not change.
What is velocity ratio?
Definition of velocity ratio : the ratio of a distance through which any part of a machine moves to that which the driving part moves during the same time.
What is the efficiency of the machine ratio?
The efficiency of a machine is equal to the ratio of its output (resistance multiplied by the distance it is moved) to its input (effort multiplied by the distance through which it is exerted); it is also equal to the ratio of the AMA to the IMA.
What is the difference between efficiency and mechanical advantage?
Mechanical advantage is a measure of how much your force is multiplied, efficiency is a measure of how much of the work you do actually goes to moving the thing you’re trying to move.
(i) For an ideal machine (free from friction etc.), work output is equal to the work input, so the efficiency is equal to 1 ( or 100\% ) and the mechanical advantage is numerically equal to the velocity ratio. So, For an ideal machine, M.A. = V.R.
What is the formula of velocity ratio?
This is how we can prove that V.R. is represented by another displacement ratio formula which is like this: V.R. = dE / dL = ratio of the displacement of the effort to the displacement of the load. When the Velocity Ratio (VR) value of a machine is less than 1 then we can say that machine provides a speed gain.
What is efficiency formula?
The efficiency formula is: (Work output ÷ Work input) x 100\% = Efficiency. The work output in this definition is considered to be the useful amount of work output – that is, all scrap, spoilage, and waste is excluded from the numerator.
What is mechanical advantage and velocity ratio of a lever?
Mechanical advantage is defined as the ratio of resistance overcomes to the effort applied. Velocity ratio of simple machine is the ratio of distance travelled by the effort to the distance travelled by load in a machine.