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प्रश्न
The following belong to which class of lever?
Rowing of a boat
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उत्तर
Second-class of lever
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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?
Pliers Tools
The following belong to which class of lever?
Nutcracker
The following belong to which class of lever?
Fore-arm
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.
