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प्रश्न
What is a lever?
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
Write down a relation expressing the mechanical advantage of a lever.
shows a nut cracker name the class of 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.
Give three examples for leavers of 1st order.
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?
An oar of a boat
The following belong to which class of lever?
Human-arm
The following belong to which class of lever?
Pliers Tools
A lever is used to multiply the force.
