Solution: 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. For an ideal machine
Solution: 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. For an ideal machine
Why is the work input not equal to the work output?
Although nearly equal, the output work is less than the input work because of friction . All machines use some amount of input work to overcome friction. The only way to increase the work output is to increase the amount of work you put into the machine. You cannot get more work out of a machine than you put into it!
Is work output always less than work input?
Although nearly equal, the output work is less than the input work because of friction . All machines use some amount of input work to overcome friction. The only way to increase the work output is to increase the amount of work you put into the machine.
When work is done work output?
In physics, work output is the work done by a simple machine, compound machine, or any type of engine model. In common terms, it is the energy output , which for simple machines is always less than the energy input, even though the forces may be drastically different.
Can you make the work output of a machine greater than work input?
The only way to increase the work output is to increase the work input . You can’t get more work out of a machine than you put into it. The moving parts of a machine must use some of the work input to overcome friction. Because of friction, the work output of a machine is always less than the work input.
How do you calculate work output?
The formula calculating work output is F*D/T , where F is the force exerted, D is the distance and T is the time. The work output of a system is also described as its Power. In order for work to be done, force has to be applied in the direction of the motion.
Why is output power less than input power?
The output work is always less than the input work because some input work is used to overcome friction . Therefore, efficiency is always less than 100 percent. ... Efficiency is the percent of work put into a machine by the user (input work) that becomes work done by the machine (output work).
Why Ma is always less than VR?
The mechanical advantage(M.A) of a real machine is always less than its velocity ratio(V.R) because mechanical advantage decreases due to the friction and weight of moving parts of the machine whereas the velocity ratio remains constant. ... Because of friction, air resistance, this Ideal situation would never be achieved.
What is the useful work output?
efficiency . The efficiency of a machine is the ratio of useful energy output to total energy input, or the percentage of the work input that is converted to work output. Efficiency can be expressed as the ratio of useful work output to total work input.
What is output force?
The output force is the force that you would need to lift the object without the inclined plane . This force is equal to the weight of the object.
Why is no machine 100 efficient?
Explanation: No machine is free from the effects of gravity, and even with wonderful lubrication, friction always exists. The energy a machine produces is always less than the energy put into it (energy input). ... That is why 100% efficiency in machines shall not be possible .
What is the input work?
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.
What is transferred to an object when work is done?
Work transfers energy . ... When you do work on an object, some of your energy is transferred to the object. You can think of work as the transfer of energy. In fact, both work and energy
What is the formula of output?
The formula calculating work output is F*D/T , where F is the force exerted, D is the distance and T is the time. The work output of a system is also described as its Power. In order for work to be done, force has to be applied in the direction of the motion.
What is work output divided by work input?
efficiency . equals the output work divided by the input work; expressed as a percentage. inclined plane.
