Why is the mechanical advantage of lever of the thread class always less than one? Give one example of this class of lever

Open in App

Solution

In a class III lever effort lies between the load and fulcrum. Also, effort arm is shorter than the load arm. Therefore, in a class (III) lever mechanical advantage is less than one. It is useful because it allows the effort to be applied at convenient point. A sugar tong or a knife as shown in an example of a class III lever.

Suggest Corrections

Similar questions

Explain why the mechanical advantage of the class III lever is always less than 1.

Q. Which class of levers has a mechanical advantage always greater than one? What change can be brought about in this lever to increase its mechanical advantage?

Give one example each of a class I lever where mechanical advantage is (a) more than 1, and (b) less than 1.

Class III lever have mechanical advantage less than one. Why are they then used?

Which type of lever has a mechanical advantage always more than 1 ? Give reason with one example. What change can be made in this lever to increase its mechanical advantage ?

Join BYJU'S Learning Program