Advertisements
Advertisements
प्रश्न
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.
Advertisements
उत्तर
(i) Sum of the clockwise moments about the fulcrum is equal to the sum of the anti-clockwise moments about the fulcrum.
(ii) Lever of class III,
Example: forceps or a pair of tongs.
(iii) E × 100 = 190 × 20
∴ E = 38 N.
संबंधित प्रश्न
Name a machine to obtain gain in speed?
State the principle of a lever?
Write down a relation expressing the mechanical advantage of a lever.
shows a nut cracker name the class of lever ?
The lever for which the mechanical advantage is less than 1 has :
Which type of levers have mechanical advantage always more than 1? Give reasons.
The following belong to which class of lever?
An oar of a boat
The following belong to which class of lever?
Rowing of a boat
The following belong to which class of lever?
Knife
The following belong to which class of lever?
Fore-arm
