A machine has a work output of 900Joules.If the work input to the machine was 1800 Joules calculate it's efficiency
To calculate the efficiency of a machine, you can use the following formula:
Efficiency = (Work Output / Work Input) * 100%
Given that the work output is 900 Joules and the work input is 1800 Joules, we can substitute these values into the formula:
Efficiency = (900 / 1800) * 100%
To simplify the calculation, we can divide both the numerator and the denominator by 100:
Efficiency = (9 / 18) * 100%
Simplifying further, we get:
Efficiency = 0.5 * 100%
Finally, multiplying 0.5 by 100%, we find:
Efficiency = 50%
Therefore, the efficiency of the machine is 50%.
To calculate the efficiency of a machine, you need to divide the work output by the work input and then multiply by 100 to express it as a percentage. In this case, the work output is given as 900 Joules, and the work input is given as 1800 Joules.
So, the efficiency can be calculated as follows:
Efficiency = (Work output / Work input) x 100
Efficiency = (900 Joules / 1800 Joules) x 100
Efficiency = 0.5 x 100
Efficiency = 50%
Therefore, the efficiency of the machine is 50%.