Single Choice

The mechanical advantage of a lever is equal to:

ALoad arm / Effort arm
BEffort arm / Load arm
Correct Answer
CLoad arm + Effort arm
DLoad ann-Effort arm

Solution

According to the law of levers, the mechanical advantage of a lever is equal to the ratio of the length of its effort arm to the length of its load arm. It is derived from the principle of moments. (Option B)

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

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

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

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 $$1$$

Contact Details