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(i)
What is lever
(ii)
Explain each of the following terms as applied to simple machines:
(α)
mechanical advantage
(β)
Velocity ratio
A lever is a simple machine which consists of a rigid bar/rod free to turn about a fixed turning point called the fulcrum/pivot.
Mechanical advantage of a machine is the ratio of the load to the effort needed to raise the load
OR
Mechanical advantage (M.A) = Load (L) Effort (E)
Velocity ratio of a machine is the ratio of the distance moved by the effort to the distance moved by the load
Velocity ratio (V.R) = Distance moved by effort Distance moved by load
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