An actual pulley system always has mechanical advantage less than velocity ratio. It is because :
A. a part of effort is wasted in overcoming friction.
B. a part of effort is wasted in overcoming load of movable block
C. both (a) and (b)
D. none of these
Answer:C
An actual pulley system always has mechanical advantage less than velocity ratio. It is because :
A. a part of effort is wasted in overcoming friction. B. a part of effort is wasted in overcoming load of movable block C. both (a) and (b) D. none of these