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प्रश्न
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.
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उत्तर
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
संबंधित प्रश्न
Name the class to which the following lever belong:
an oar rowing a boat.
Name the class to which the following lever belong:
a see-saw
Draw diagram to illustrate the position of fulcrum, load, and effort, of the following:
a pair of forceps
State three differences between the three classes of levers.
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.
Tick the most appropriate answer.
A pair of scissors is an example of a/an
Answer the following in a word or two or in a sentence.
Given an example of a Class I lever.
Draw a labelled diagram of a class II lever. Give one example of such a lever.
Classify the things below.
| Sl. No | Examples | Class of Lever |
| 1. | Spade | |
| 2. | Seesaw | |
| 3. | Wheel barrow | |
| 4. | Plier | |
| 5. | Nail cutter |
Classify the following into levers:
Sugar tongs
