Question

genius people old help me
17.Which formulae of the following can give the value of velocity ratio of the wheel and axle ?
(1 Point)
Effort arm/Load arm
l/h
R/r
L*Ld​

Answer 1

Answer:

Calculate velocity ratio. ... Load (L)= 500N ... Effort arm (EA) = 1.75-0.5 = 1.25 ... ⇒E×1.25 =500×0.5 ... VR=LAEA=0.51.25=2.5.

Answer 2

Answer:

R/r

Explanation:

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.

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