Same chapter1 markDifficulty: Easy
The velocity ratio of a single movable pulley is:
Machines
2 marksDifficulty: Easy
Define mechanical advantage, velocity ratio and efficiency of a machine.
Original Khojo Papers practice question — not from a past board paper.
Answer
The mechanical advantage is the ratio of the load to the effort. The velocity ratio is the ratio of the distance moved by the effort to the distance moved by the load in the same time. The efficiency is the ratio of the useful work got out of the machine to the work put into it, usually given as a percentage.
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
For an ideal machine the efficiency is 1 and the mechanical advantage equals the velocity ratio.
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