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Question
How is the mechanical advantage related to the velocity ratio fro (i) an ideal machine, (ii) a pratical machine ?
How is the mechanical advantage related to the velocity ratio fro (i) an ideal machine, (ii) a pratical machine ?
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Solution
The mechanical advantage for an actual machine is equal to the product of its efficiency and velocity ratio
(i) an ideal machine efficiency is 1
MA=VR
(ii) a pratical machine
The efficiency of such a machine is always less than 1, i.e. h<1. This is because there is always some loss in energy in form of friction etc
MA<VR
(i) an ideal machine efficiency is 1
MA=VR
(ii) a pratical machine
The efficiency of such a machine is always less than 1, i.e. h<1. This is because there is always some loss in energy in form of friction etc
MA<VR
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