Advertisements
Advertisements
Question
Which class of lever has the mechanical advantage always less than 1? Give an example.
Advertisements
Solution
The mechanical advantage of class III levers is always less than 1.
Example: a pair of tongs, sugar tongs, knife, forceps, etc.
APPEARS IN
RELATED QUESTIONS
What is a lever?
Name the class to which the following lever belong:
A pair of scissors
State three differences between the three classes of levers.
Name the machine to which the following belong:
Sugar tongs
A lever of length 100 cm has the effort of 15 kgf at a distance of 40 cm from the fulcrum at one end. What load can be applied at its other end?
In a lever, the 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 :
(a) the length of load arm,
(b) the length of effort arm, and
(c) the mechanical advantage of the lever.
Answer the following.
What is a Class I lever?
Tick the most appropriate answer.
Which of the following is a Class II lever?
Answer the following in short.
What is the basis of the classification of levers?
Answer the following in short.
Using a suitable example, describe how a machine acts as a force multiplier.
