Physics
(a) What is meant by an ideal machine?
(b) Write a relationship between the mechanical advantage (MA) and velocity ratio (VR) of an ideal machine.
Machines
4 Likes
Answer
(a) An ideal machine is that where there is no loss of energy i.e. the work output is equal to the work input. An ideal machine is 100% efficient.
(b) For an ideal machine (free from friction etc.), work output is equal to the work input, so the efficiency is equal to 1 ( or 100% ) and the mechanical advantage is numerically equal to the velocity ratio. So,
For an ideal machine, M.A. = V.R.
Answered By
3 Likes
Related Questions
If a man is travelling in a car in a straight line path and the car suddenly turns right, then the man experiences a severe push towards the left. Explain.
(a) Define couple.
(b) State the SI unit of moment of couple.
Define work. State the conditions when the work done by a force acting on a body is zero.
The given figure shows a trace of a sound wave which is produced by a particular tuning fork.
(a) Draw a trace of the sound wave which has a higher pitch than that shown in figure.
(b) Draw a trace of the sound wave which is louder than that shown in figure.