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Question
What do you mean by the mechanical advantage of a lever?
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Solution
The mechanical advantage of a lever is equal to the ratio of the effort arm to the load arm. This is also called the principle of a lever.
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RELATED QUESTIONS
Fill in the blank:
In class II levers, the load is in between fulcrum and .........
Name the class to which the following lever belong:
a pair of sugar tongs
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 pair of forceps
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?
What is the use of the lever if its mechanical advantage is
- more than 1,
- equal to 1, and
- less than 1?
Classify the things below.
| Sl. No | Examples | Class of Lever |
| 1. | Spade | |
| 2. | Seesaw | |
| 3. | Wheel barrow | |
| 4. | Plier | |
| 5. | Nail cutter |
