With reference to the terms mechanical advantage, velocity ratio, and efficiency of a machine, name and define the term that will not change for a machine of a given design

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Solution

Mechanical advantage = Input force/output force

Velocity ratio = Input velocity/Output velocity

Efficiency = Input energy/Output Energy

It is velocity ratio that will not change for a machine of given design while mechanical advantage and efficiency can vary according to circumstances.

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Similar questions

(a) State the relationship between mechanical advantage, velocity ratio and efficiency.

(b) Name the term that will not change for a machine of a given design.

Derive a relationship between mechanical advantage, velocity ratio and efficiency of a machine.

= 10

= 5

Select the incorrect statement :

(a) A machine always has the efficiency less than $100 %$ .

(b) The mechanical advantage of a machine can be less than 1.

(d) A machine can have the mechanical advantage greater than the velocity ratio.

Define the term efficiency of a machine. Give two reasons for a machine not to be $100 %$ efficient?

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