why is the efficiency of single movable pulley not 100%
Answers
Answered by
3
hey Mate here is ur ans
though we calculate the mechanical advantge and velocity ratio of a single fixed pulley as 1
still efficiency of any true machine is not 100% as no machine is an ideal machine
the reason for this is
* loss of energy due to friction between moving parts of machine at the axle or in the pulley bearings so effort is more
* the weight of the moving parts of the given design of the pulley.
hope it helps you
hetvitrivedi2293:
thanx
actually i have more doubts
velocity ratio of single movable pulley and how does friction in the pulley bearing affects it??
ohkii
Answered by
4
1 due to friction in the movable parts of the pulley
2 due to weight of the pulley.
Which book do you have??
but author
whoa look at front cover
do u study without knowing author's name?/
Q. what is the velocity ratio of a single movable pulley? how does the friction in the pulley bearing affect it?
ans. velocity ratio is 2 nd friction has no affect on iy
Similar questions