Table of Contents
What is the work done by a machine?
The work you do on a machine is called the input work, and the work the machine does in turn is called the output work. A machine’s is the ratio of its output work to the input work. An ideal machine would be 100 percent efficient.
What is not changed when work is done by a machine?
What is not changed when work is done by a machine? the amount of work done. If a simple machine provides an increased output force, what happens to the output distance? it is reduced.
What is the work done by machine on load called?
Amount of work done by a machine on the load (weight) is called output of the machine. The ratio of output of amachine to the input of machine is called its efficiency.
What are three ways can a machine make work easier?
Machines can change force by making a person apply less force to make the machine operate. Machines make work easier in this sense. Describe three different ways that using a machine makes doing work easier?
How does a machine affect the amount of work done?
Machines allow force to be applied over a greater distance, which means that less force will be needed for the same amount of work. The Force-Distance Trade-Off When a machine changes the size of the force, the distance through which the force is exerted must also change.
How can a machine change the force applied?
If a machine (doorknob attached to shaft) allows you to exert less force, you must apply that force over a greater distance. the complete and total amount of work done remains the same, whether its by machine or not. Because a machine does not change the amount of work to be done, less force must mean greater distance.
How is mechanical efficiency measured in a machine?
mechanical efficiency. a quantity, usually expressed as a percentage, that measures the ratio of work output to work input in a machine (The work output of a machine can never be greater than the work input. In fact, the work output of a machine is always less than the work input.