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प्रश्न
Answer the following.
State the principle of levers.
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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.
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संबंधित प्रश्न
Which class of lever has the mechanical advantage always less than 1? Give an example.
Name the class to which the following lever belong:
an oar rowing a boat.
Name the class to which the following lever belong:
a wheelbarrow
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.
Give one example of a machine used to multiply speed.
Which type of lever has a mechanical advantage always more than one? Give one example. What change can be made in this lever to increase its mechanical advantage?
Explain why the mechanical advantage of a class II of lever is always more than 1.
Classify the following into levers:
A door
Classify the following into levers:
A fishing rod
Match the following:
| 1. | Class I lever | a. | Wheelbarrow |
| 2. | Class II lever | b. | Seesaw |
| 3. | Class III lever | c. | Axe |
| 4. | Wedge | d. | Hockey sick |
