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प्रश्न
Draw a labelled sketch of a second class lever. Give one example of such a lever.
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उत्तर
A labelled diagram of a second class lever is given below. Its example is a nut-cracker.
Second Class Lever
Example of a second class lever (Nut-cracker)
संबंधित प्रश्न
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?
shows a nut cracker name the class of lever ?
The lever for which the mechanical advantage is less than 1 has :
A man uses a crowbar of length 1.5 m to raise a load of 75 kgf by putting a sharp edge below the bar at a distance 1 m from his hand.
- Draw a diagram of the arrangement showing the fulcrum (F), load (L) and effort (E) with their directions.
- State the kind of lever.
- Calculate:
- load arm,
- effort arm,
- mechanical advantage and
- the effort needed.
Fig 3.17 below shows a lever in use.
(a) To which class of lever does it belong?
(b) If FA = 80 cm, AB = 20 cm, find its mechanical advantage.
(c) Calculate the value of E.
Give three examples for leavers of 1st order.
Give three examples for leavers of the third order.
The following belong to which class of lever?
An oar of a boat
The following belong to which class of lever?
A claw-hammer
The diagram below shows a lever in use.
(i) To which class of lever does it belong?
(ii) If FA = 40 cm, AB = 60 cm, then find the mechanical advantage of the lever.
