Advertisements
Advertisements
Question
Describe three orders of levers giving an example of each. Draw neat diagrams showing the positions of fulcrum, load, and effort in each kind of lever.
Solution
The levers are of three kinds :
Class I levers that have fulcrum in between the load and the effort.
Eg. See - Saw
Class II levers which have load in between the fulcrum and the effort
Eg. - Nut - Cracker
Class Ill levers which have effort in between the fulcrum and the Load
Eg. - Forceps.
APPEARS IN
RELATED QUESTIONS
Give one example of a class I lever in a case where the mechanical advantage is equal to 1?
Name the class to which the following lever belong:
a crowbar
Draw diagram to illustrate the position of fulcrum, load, and effort, of the following:
a see-saw.
Name the machine to which the following belong:
Beam balance
Answer the following in a word or two or in a sentence.
Which type of machine is used to squeeze a lemon?
Answer the following in short.
Using a suitable example, describe how a machine acts as a force multiplier.
What is the use of the lever if its mechanical advantage is
- more than 1,
- equal to 1, and
- less than 1?
Explain why scissors for cutting cloth may have blades longer than the handles, but shears for cutting metals have short blades and long handles.
Explain why the mechanical advantage of a class II of lever is always more than 1.
second-order lever ______.
