Subjective Type

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

Solution

With levers of class III, we do not get gain in force, but we get gain in speed, that is a longer displacement of load is obtained by a smaller displacement of effort.

SIMILAR QUESTIONS

Machines

A pair of scissors and a pair of pliers both belongs to the same class of levers. Name the class of lever. Which one has the mechanical advantage less than 1 ?

Machines

State the kind of lever which always has the mechanical advantage less than 1. Draw a labelled diagram of such lever.

Machines

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

Machines

In a lever, fulcrum is at one end at a distance of $$30\ cm$$ from the load and effort is at the other end at a distance of $$90\ cm$$ from the load. Find: the mechanical advantage of the lever.

Machines

The length of a lever is $$2\ m$$. Calculate its mechanical advantage if the fulcrum is situated at a distance of $$40\ cm$$ from the effort.

Machines

The length of the load arm of a lever is $$6\ m$$ long and the effort arm is $$3\ m$$ long. What is the effort required to lift a load of $$40\ N$$?

Machines

The mechanical advantage of a lever is equal to:

Machines

What do you mean by the mechanical advantage of a lever?

Machines

Which class of lever has the mechanical advantage always less than $$1$$? Given an example.

Machines

Give one example of class I lever in each case where the mechanical advantage is more than $$1$$

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