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प्रश्न
The following belong to which class of lever?
Sugar tongs
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उत्तर
Third-class of lever
संबंधित प्रश्न
Give one example of a class I lever where mechanical advantage is more than one ?
A 4 m long rod of negligible weight is to be balanced about a point 125 cm from one end and a load of 18 kgf is suspended at a point 60 cm from the support on the shorter arm.
- If a weight W is placed at a distance of 250 cm from the support on the longer arm to balance the rod, find W.
- If a weight 5 kgf is kept to balance the rod, find its position.
- To which class of lever does it belong?
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 the third 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?
Human-arm
The following belong to which class of lever?
A claw-hammer
The following belong to which class of lever?
Nutcracker
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.
What is a lever?
