There are always losses in the system . Friction causing heat. Vibration taking away energy . There are no prefect systems therefore there will always be losses.
In a real machine, part of the energy (or power) is always wasted.
Entropy.
No, the work output is not always less than the work input when a machine is used. In an ideal scenario, the work output from a machine can be equal to or even greater than the work input, though in practice some energy is always lost due to factors such as friction and heat.
The work output of a machine is always less than the work input due to energy losses in the form of heat, friction, and other inefficiencies. These losses result in some of the input work being converted into forms other than useful output work, leading to a decrease in efficiency.
Every real machine is subject to forces that reduce output. These include actual forces such as friction, or human controlled forces such as imperfect machining. This reduces the output to less than the ideal.
Every real machine is subject to forces that reduce output. These include actual forces such as friction, or human controlled forces such as imperfect machining. This reduces the output to less than the ideal.
It is the output energy compared to the input energy. This will always be less than 100%
Every real machine is subject to forces that reduce output. These include actual forces such as friction, or human controlled forces such as imperfect machining. This reduces the output to less than the ideal.
The output energy of a machine is always less than the input energy due to energy losses from factors such as friction, heat, and inefficiencies in the system. These losses result in some of the input energy being transformed into forms that are not useful for the intended function of the machine.
It is usually unavoidable that some energy is wasted.
For a machine with efficiency less than 100%, the output work will always be less than the input work. This is because some of the input work is lost as waste energy due to factors like friction, heat, or other inefficiencies in the machine. The efficiency of a machine is a measure of how well it converts input work into useful output work.
In an ideal universe, where there are no friction or heat transfer losses, work out = work in. In our universe, however, work output is always less than input. How much less depends on the efficiency of the machine's design.