Advertisements
Advertisements
प्रश्न
Answer the following.
State the principle of levers.
Advertisements
उत्तर
The principle of a lever states that the product of the load and the load arm is always equal to the product of the effort and the effort arm.
Load x Load arm = Effort x Effort arm Load Effort arm
`"Load "/ "Effort"`= `"Effort arm"/"Load arm"`
The above ratio is called the mechanical advantage of a lever.
संबंधित प्रश्न
Fill in the blank:
In class II levers, the load is in between fulcrum and .........
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.
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 pair of scissors
Name the class to which the following lever belong:
a wheelbarrow
Draw diagram to illustrate the position of fulcrum, load, and effort, of the following:
a nutcracker
How can you increase the mechanical advantage of a lever?
Name the machine to which the following belong:
Beam balance
Answer the following.
Name the simplest of all types of machines.
Answer the following.
What is a Class I lever?
Answer the following in a word or two or in a sentence.
Given an example of a Class I lever.
Answer the following in short.
Using a suitable example, describe how a machine acts as a force multiplier.
Give one example of a class I lever where mechanical advantage is less than 1.
The diagram below shows a rod lifting a stone.
- Mark position of fulcrum F and draw arrows to show the directions of load L and effort E.
- What class of lever is the rod?
- Give one more example of the same class of lever stated in part (b).
Name the load, effort, and fulcrum.
 |
 |
 |
|
1. ______ 2. ______ 3. ______ |
1. ______ 2. ______ 3. ______ |
1. ______ 2. ______ 3. ______ |
Differentiate Class I lever and Class II lever.
Name the class of the lever shown in the picture below:
A ______ lever will always have M.A. > 1.
Classify the following into levers:
Claw hammer
