Physics
How is mechanical advantage related to the velocity ratio for an actual machine? State whether the efficiency of such a machine is equal to 1, less than 1 or more than 1.
Machines
90 Likes
Answer
For an actual machine, the mechanical advantage is always less than its velocity ratio or the output work is always less than the input work.
The efficiency of such a machine is always less than 1 as some part of input energy is lost against the force of friction.
Answered By
55 Likes
Related Questions
How is mechanical advantage related to the velocity ratio for
(i) an ideal machine,
(ii) a practical machine?
A machine works as a
(i) force multiplier,
(ii) speed multiplier.
In each case state whether the velocity ratio is more than or less than 1.
Write down a relation expressing the mechanical advantage of a lever.
Give one example each of a class I lever where the mechanical advantage is
(a) more than 1, and
(b) less than 1.