Question

Suppose 1,000 joules of input work were applied to a machine with only 8

percent efficiency. What would be its output work?

Answer 1

When 1,000 joules of input work is applied to a machine with 8% efficiency, the output work would be 80 joules.

Step-by-step explanation:

If 1,000 joules of input work were applied to a machine with only 8% efficiency, the output work of the machine can be calculated using the formula for efficiency. Efficiency (% efficiency) can be defined as the ratio of the output work (Wo) to the input work (Wi) multiplied by 100. In this case:

% efficiency = (Wo / Wi) x 100

To find the output work (Wo), we rearrange the equation to solve for Wo:

Wo = (Wi x % efficiency) / 100

Plugging in the values provided:

Wo = (1000 J x 8) / 100

Wo = 80 joules

Therefore, the output work would be 80 joules.