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प्रश्न
Which class of lever found in the human body is being used by a boy when he holds a load on the palm of his hand.
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उत्तर
Class III lever.
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संबंधित प्रश्न
Which class of lever will always have MA > 1 and why?
The diagram below shows a lever in use:
- To which class of levers does it belong?
- Without changing the dimensions of the lever, if the load is shifted towards the fulcrum what happens to the mechanical advantage of the lever?
State the principle of a lever?
Give three examples for leavers of the third order.
Which class of lever found in the human body is being used by a boy when he raises the weight of his body on his toes?
Shears, used for cutting metals and scissors used for cutting clothes are both examples of levers of the first order. However, whereas the shears always have short blades and long handles, the scissors often have blades much longer than the handles. Explain, why this is so?
Draw a labelled sketch of a second class lever. Give one example of such a lever.
In the diagram shown alongside a claw hammer, mark the fulcrum (F) and indicate the directions of load (L) and effort (E) with arrows. What class of lever is it? Give one more example of this class of lever.
The length of a nut-cracker is 12 cm. A nut, when kept at a distance of 4 cm from its fulcrum, requires an effort of 100 gf to crack it. What force will be required to crack the nut without using the nut-cracker?
What is a first-order lever?
