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प्रश्न
What is a lever?
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उत्तर
A lever is a rigid rod that may be bent or straight and rotates around a point; it is known as a FULCRUM.
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संबंधित प्रश्न
Class II levers are designed to have ______.
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 second order.
The following belong to which class of lever?
A see-saw
The following belong to which class of lever?
Human-arm
The following belong to which class of lever?
A claw-hammer
The following belong to which class of lever?
Rowing of a boat
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?
State the types (or kinds) of lever, and give two examples of each kind.
