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प्रश्न
Answer the following.
Name the simplest of all types of machines.
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उत्तर
Lever.
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संबंधित प्रश्न
Give one example of a class I lever in a case where the mechanical advantage is less than 1?
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.
State the principle of levers.
Tick the most appropriate answer.
Which of the following is a Class II lever?
Explain why the mechanical advantage of the class III type of lever is always less than 1.
Classify the following into levers:
A door
Classify the following into levers:
A fishing rod
Classify the things below.
| Sl. No | Examples | Class of Lever |
| 1. | Spade | |
| 2. | Seesaw | |
| 3. | Wheel barrow | |
| 4. | Plier | |
| 5. | Nail cutter |
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:
