Test Index

JAMB Physics 2015 Paper

Question : 34

Total: 66

If the velocity ratio of a machine is 5. What is its ratio of x and y?

Solution:

Concept:

Velocity ratio compares the distance moved by the effort to the distance moved by the load.

Explanation:

Velocity ratio,

V.R = \frac{\text{distance moved by effort}}{\text{distance moved by load}}

Let

x

be the effort distance and

y

be the load distance.

Therefore,

V.R = \frac{x}{y}

Given

V.R = 5

, we have

\frac{x}{y} = 5 = \frac{5}{1}

x = 5

and

y = 1

Thus,

x:y = 5:1

Answer:

The ratio is

5:1

, which corresponds to Option C.

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