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(a) (i) State the principle of moments a...

(a) (i) State the principle of moments as applied to the lever shown in Figure. And
(ii) calculate its mechanical advantage if
`AB=2*0m and FA=20cm`.
(b) Calculate the effort needed to lift and load.

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### Step-by-Step Solution **(a) (i) State the principle of moments as applied to the lever:** The principle of moments states that when a system (or object) is in equilibrium, the sum of the clockwise moments about a pivot (fulcrum) is equal to the sum of the anticlockwise moments about that same pivot. Mathematically, this can be expressed as: \[ \text{Load} \times \text{Distance from load to fulcrum} = \text{Effort} \times \text{Distance from effort to fulcrum} ...
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