Why is VR(Velocity Ratio) greater than MA (Mechanical Advantage ) in a simple machine?
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The mechanical advantage of a machine is always less than its velocity ratio.It is because mechanical advantage decreases due to the friction and weight of moving parts of the machine, but the velocity ratio remains constant. Similarly, if mechanical advantage had been equal to the velocity ratio of the machine then the efficiency would have been 100%, which is impossible.
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Explanation:
The mechanical advantage (M.A) of a real machine is always less than its velocity ratio(V.R) because mechanical advantage decreases due to the friction and weight of moving parts of the machine whereas the velocity ratio remains constant.
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