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Question
Answer the following.
State the principle of levers.
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Solution
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.
RELATED QUESTIONS
State whether the following statement is True or False.
All levers are force multipliers.
Give one example of a class I lever in a case where the mechanical advantage is equal to 1?
Give one example of a class I lever in a case where the mechanical advantage is less than 1?
Name the class to which the following lever belong:
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Draw diagram to illustrate the position of fulcrum, load, and effort, of the following:
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What is the use of the lever if its mechanical advantage is
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- equal to 1, and
- less than 1?
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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 |
Name the class of the lever shown in the picture below:
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