Question

how is velocity ratio of wheel and axle calculate?​

Answer 1

Answer:

Thus, in one revolution the distance moved by the effort= 2pR, And the distance moved by the load= 2pr. Hence, the velocity ratio of the system= 2pR/2pr = R/r. Thus the velocity ratio of a wheel and axle is the ratio of the radius of the wheel to the radius of the axle.

Answer 2

In order to calculate the mechanical advantage of a wheel and axel, you can divide the radius of the wheel by the radius of the axle.

Explanation:

• Thus, the distance travelled by effort in one revolution equals $2pR$, while the distance travelled by load equals $2pR$. As a result, the system's velocity ratio is  $2pR/2pr=R/r$.

• The radius of the wheel divided by the radius of the axle is the velocity ratio of the wheel and axle.
• It functions as a lever because of the load effort and fulcrum. When in operation, the weight and effort can be varied constantly around the perimeter of the wheel and axle for 360 degrees. As a result, it's a continuous lever.