velocity ratio

The topic velocity ratio is discussed in the following articles:

measurement of force amplification

  • TITLE: wheel and axle (machine)
    A measure of the force amplification available with the system is the velocity ratio, or the ratio of the velocity (VF) with which the operator pulls the rope at F to the velocity at which the weight W is raised (VW). This ratio is equal to twice the radius of the large drum divided by the difference in the radii of drums D and d....

principle of virtual work

  • TITLE: machine
    SECTION: Calculating efficiency.