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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
Which class of lever will always have MA > 1 and why?
Write down a relation expressing the mechanical advantage of a lever.
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?
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.
Define Lever
The following belong to which class of lever?
Human-arm
The following belong to which class of lever?
Rowing of a boat
The following belong to which class of lever?
Knife
Draw a labelled sketch of a second class lever. Give one example of such a lever.
The diagram shows the use of a lever.
- State the principle of moments as applied to the above lever.
- Which class of lever is this? Give an example of this class of lever.
- If FA = 100 cm, AB = 90 cm, calculate the minimum effort required to lift the load.
