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प्रश्न
Name a machine to obtain gain in speed?
Give one example of a machine used to obtain gain in speed.
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उत्तर
When a pair of scissors is used to cut the cloth, its blades move longer on the cloth while its handles move a little.
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संबंधित प्रश्न
What is a lever?
The lever for which the mechanical advantage is less than 1 has :
Give three examples for leavers of second order.
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.
The following belong to which class of lever?
The Physical balance
The following belong to which class of lever?
A claw-hammer
The following belong to which class of lever?
Rowing of a boat
The following belong to which class of lever?
Knife
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.
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.
