Velocity ratio of a machine is:
ATime taken / distance covered in general usage
BLoad / effort across all cases
CEffort * load across all cases
DDistance moved by effort / distance moved by load
Answer & Solution
Correct answer: D. Distance moved by effort / distance moved by load
1. Velocity ratio (V.R.) compares displacements.
2. V.R. = distance moved by effort / distance moved by load.
3. Larger V.R. means effort moves a bigger distance for each unit lift of load.
4. So option A is correct.
_Source: Selina Concise Physics ICSE Class 10, Ch 3 'Machines' (aplustopper.com extract)_
Related questions
Why does increasing the length of an inclined plane reduce effort?In an ideal block and tackle with 5 strings supporting the load, the effort needed to liftA force multiplier always has:Which of the following has M.A. of 1?A boy can apply effort of 100 N. If he wants to lift a 400 N load, the M.A. of the machineIf a 200 N load is lifted 0.5 m using a 50 N effort moving 2 m, find efficiency:In a Class I lever the effort arm is 60 cm and the load arm is 20 cm. Mechanical advantageA pulley arrangement has 3 movable and 1 fixed pulley. Ideal V.R. is: