work output is always greater than the work input
load lifted is always greater than the effort applied
effort applied is always greater than the load lifted
velocity ratio is always greater than the mechanical advantage
Explanation
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They seem to be right.
Got this from Google
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
It's D
C says, effort applied is more than load applied 
️
assuming it said workdone by effort is more than workdone by load 
️....
just EFFORT ,has no formular but workdone by effort (work INPUT) has a fomular which is , effort × dist moved by effort and likewise load
because of loss of MA OR OUTPUT( DUE TO LOSS OF ENERGY BY FRICTION FORCE e.t.c)
The correct answer is:
C. effort applied is always greater than the load lifted.
Why?
Efficiency of a machine is given by:
Efficiency
=
Work output
Work input
×
100
%
Efficiency=
Work input
Work output
×100%
In real machines:
Some energy is always lost (e.g., due to friction, heat, sound).
So work input > work output.
This means:
You must apply more effort than the load you lift.
Why others are wrong:
A: Wrong — output cannot be greater than input.
B: Wrong — load is not greater than effort in real machines.
D: Not the main reason; it's a consequence, not the fundamental explanation.
✔ So the best explanation is C.
