What do you mean by efficiency of simple machine is 60%?
By the statement, Efficiency of a machine is 60% , it is meant that ‘The work output is 60% of the work input’. If you apply 100J of energy for a machine, it will be able to life load of 60 J only.
Is it possible to be a perfect machine in our daily life?
Answer. The definition of a perfect machine states that a perfect machine should be 100% efficient which means the 100% of the energy input should be transformed into work output. For these reasons,we cannot expect perfect machines in the real life situations.
What is a perfect machine?
An ideal machine is the one in which no part of the work that is done on the machine is wasted. It is also called a perfect machine. Thus, for an ideal machine, the work output is equal to the work input and the efficiency of the machine is 1 = 100%
What are the characteristics of ideal machine?
Ideal machines have the theoretical maximum performance, and therefore are used as a baseline for evaluating the performance of real machine systems. A simple machine, such as a lever, pulley, or gear train, is “ideal” if the power input is equal to the power output of the device, which means there are no losses.
Which is the most efficient machine?
Amazing But True! Believe it not, the bicycle is the most efficient transport machine ever invented. You can go farther for the same amount of energy on a bike than you can with any other means of transport. A bicycle goes 3,000 miles on the energy equivalent of one gallon of gasoline.
Which condition is correct for an ideal frictionless machine?
True. An ideal frictionless machine: Has no friction.
What is the mechanical advantage of ideal machine?
The ideal mechanical advantage of a machine reflects the increase or decrease in force there would be without friction. It is always greater than the actual mechanical advantage because all machines must overcome friction.
What is meant by VR of a machine is 3?
Explanation:V.R of a lever is 3 means effort distance of the lever is 3 times more than the effort distance of the load. and. Efficiency of a lever is 60% means 40% of the energy is wasted due to friction as no machine is Friction less.
What is the mechanical advantage used for?
Mechanical advantage is a measure of the ratio of output force to input force in a system, used to analyze the forces in simple machines like levers and pulleys. Despite changing the forces that are applied the conservation of energy is still true and the output energy is still equal to the input energy.