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.

The Diagram Shows the Use of a Lever. (i) State the Principle of Moments as Applied to the Above Lever. (Ii) Which Class of Lever is This? Give an Example of this Class of 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.

Diagram

(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.

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