Question

How is velocity ratio of wheel and axle calculatedaad
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Answer 1

VR =
`(Radius of wheel)/(Radius of axle)`

Step-by-step explanation:

A machine is a device that can be used to overcome a load by the application of an effort through a pivot. Examples are: pulleys, wedge, screw jack, wheel and axle etc.

The wheel and axle is a simple device that can be used to lift a load through a height. Its velocity ratio (VR) can be determined by:

VR =
`(Radius of wheel)/(Radius of axle)`

Note that for a practical wheel and axle, the radius of the wheel is greater than the radius of the axle.