The work done by a machine is the output energy provided by the machine in an intended task, while the work done on a machine is the input energy required to operate the machine. The work done by the machine should ideally be greater than the work done on the machine to ensure efficiency.
The work done on a machine is called input work or mechanical work. It refers to the energy transferred to the machine to operate it and perform tasks.
In an ideal scenario, the work done with a machine is the same as work done without a machine because the total work output must be equal to the total work input. While machines can make work easier by multiplying force or changing the direction of force, they cannot create energy. Therefore, the work done by the machine should ideally be equal to the work done without a machine.
A simple machine known as a mechanical advantage can compare the output work to the input work. By dividing the output work by the input work, the mechanical advantage provides a ratio that indicates how much the machine amplifies force or motion.
work output
Power. It is the amount of work done per unit of time and is typically measured in watts or horsepower. The higher the power, the faster work can be done by the machine.
The work done on a machine is called input work or mechanical work. It refers to the energy transferred to the machine to operate it and perform tasks.
In an ideal scenario, the work done with a machine is the same as work done without a machine because the total work output must be equal to the total work input. While machines can make work easier by multiplying force or changing the direction of force, they cannot create energy. Therefore, the work done by the machine should ideally be equal to the work done without a machine.
Work Output is the work done BY a machine. Work Input is the work done ON a machine.
Work Output is the work done BY a machine. Work Input is the work done ON a machine.
Power
Work input is work done on a machine to get the desired output. Work output is the amount of desired work that is done by a machine.
Work
A simple machine known as a mechanical advantage can compare the output work to the input work. By dividing the output work by the input work, the mechanical advantage provides a ratio that indicates how much the machine amplifies force or motion.
work output
Power. It is the amount of work done per unit of time and is typically measured in watts or horsepower. The higher the power, the faster work can be done by the machine.
Input work is the work done on a machine, while output work is the work done by the machine. Efficiency of a simple machine is calculated as the ratio of output work to input work. The efficiency of a simple machine is high when the output work is close to the input work, indicating that the machine is converting most of the input work into useful output work.
If the machine has an efficiency of 70%, it means that it only converts 70% of the input energy into useful work. Therefore, the work done by the machine would be 70% of the 20000 J of work done on it, which is 0.7 * 20000 J = 14000 J.