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The efficiency of a ramp is 75 percent If the amount of work input is 240 J what is the amoun t of useful work output?
Wiki User
∙ 11y ago
The formula for percent work efficiency is:
percent efficiency = (work output/work input) x 100
To find the answer to this question, you just need to plug the given values into the formula. The problem tells you that the work input is 240 J and the percent efficiency is 75 %, so
75 = (work output/240) x 100
Now, solve for work output:
-first divide by 100
.75 = (work output/240)
-then multiply by 240
180 J = work output (in units of joules because work is measured in joules)
And there's your answer. Hope this helped!
Wiki User
∙ 11y ago
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What is the name of the amount of useful energy you get from a system?
That may refer to the system's efficiency (which is formally the amount of useful output power divided by the amount of input power).
How is the efficiency of a compound machine calculated?
The efficiency of a machine is found by dividing the amount of work done by a machine by the amount of energy used by a machine. The answer is then multiplied by 100 to give a percentage.
The ratio of useful work output to work input is a measure of?
Efficiency
How is a machine's efficiency of a calculated?
Efficiency = useful output power / input power
What is the relationship between efficiency useful energy output and total energy output?
pie
What is the name of the amount of useful energy you get from a system?
That may refer to the system's efficiency (which is formally the amount of useful output power divided by the amount of input power).
What is the name of energy amount of useful energy you get from a system?
That may refer to the system's efficiency (which is formally the amount of useful output power divided by the amount of input power).
How is the efficiency of a compound machine calculated?
The efficiency of a machine is found by dividing the amount of work done by a machine by the amount of energy used by a machine. The answer is then multiplied by 100 to give a percentage.
How is the efficiency of a machine calculated?
Efficiency = useful output power / input power
The ratio of useful work output to work input is a measure of?
Efficiency
How is a machine's efficiency of a calculated?
Efficiency = useful output power / input power
What is the relationship between an input work and useful output work?
The relationship between input work and useful output work can be represented by efficiency. Efficiency is the ratio of useful output work to input work. A higher efficiency indicates that a larger proportion of the input work is converted into useful output work, while a lower efficiency suggests that more of the input work is wasted or converted into non-useful forms.
What is efficiency and how is it calculated?
The efficiency is output divided by input.
What is the relationship between efficiency useful energy output and total energy output?
pie
What is the measure of how much useful work a machine puts out compared to the amount of work put into it?
That is called the efficiency, and it is a number between 0 and 1 (or 0% and 100%). It is obtained by dividing output power / input power.
How is energy efficiency determined?
You divide useful output energy by the input energy. Or equivalently, useful output power by input power.
What the measure of the ratio of useful work output to work input?
Efficiency
