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प्रश्न
Give one example of a class I lever where mechanical advantage is less than 1.
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उत्तर
Class I levers with M.A. less than 1 are scissors used to cut cloth or paper. When M.A. is less than 1, this type of lever is used to increase speed.
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संबंधित प्रश्न
Fill in the blank:
In class II levers, the load is in between fulcrum and .........
What is a lever?
Which class of lever has the mechanical advantage always more than 1? Give an example.
Name the class to which the following lever belong:
A pair of scissors
Draw diagram to illustrate the position of fulcrum, load, and effort, of the following:
a pair of forceps
How does the friction at the fulcrum affect the mechanical advantage of the lever?
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.
Explain why scissors for cutting cloth may have blades longer than the handles, but shears for cutting metals have short blades and long handles.
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?
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 |
