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प्रश्न
In the following diagram of a wheelbarrow, 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 the same class of lever.
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उत्तर
In the diagram given below F shows the position of fulcrum and arrows marked at L and E indicate the direction of load and effort respectively.
It belongs to the second class of lever.
A nutcracker is one more example of the same class of lever.
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?
Write down a relation expressing the mechanical advantage of a lever.
Give three examples for leavers of second order.
The following belong to which class of lever?
A see-saw
The following belong to which class of lever?
An oar of a boat
The following belong to which class of lever?
Sugar tongs
The following belong to which class of lever?
Knife
The following belong to which class of lever?
Fore-arm
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.
A crowbar of length 100 cm is used to lift a load of 5 kgf. It has its fulcrum at a distance of 20 cm from the load. Calculate:
(i) the mechanical advantage of a crowbar and,
(ii) the effort applied at the other end.
