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प्रश्न
The following belong to which class of lever?
Wheelbarrow
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उत्तर
Second-class of lever
संबंधित प्रश्न
Write down a relation expressing the mechanical advantage of a lever.
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.
Which type of levers have mechanical advantage always more than 1? Give reasons.
Give three examples for leavers of 1st order.
The following belong to which class of lever?
A see-saw
The following belong to which class of lever?
A claw-hammer
The following belong to which class of lever?
Sugar tongs
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.
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.
A lever is used to multiply the force.
