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प्रश्न
Give three examples for leavers of second order.
उत्तर
Levers of second order:
(i) Lock and key
(ii) Opener of soda water bottle
(iii) Closing a door
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संबंधित प्रश्न
Name a machine to obtain gain in speed ?
What is a lever?
State the principle of a lever?
Draw a diagram of a lever which is always used as a force multiplier. How is the effort arm related to the load arm in such a lever?
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.
The following belong to which class of lever?
A fire tongs
The following belong to which class of lever?
Sugar tongs
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?
The following are an example of levers. State the class of lever to which each one belongs giving the relative positions of Load (L), Effort (E), Fulcrum (F):
(i) Scissors (ii) Sugar tongs (iii) Nutcracker (iv) Pliers.
What is a lever?
