Question

A person in good physical condition can put out 95 W of useful power for several hours at a stretch, perhaps by pedaling a mechanism that drives an electric generator. Neglecting any problems of generator efficiency and practical considerations such as resting time: How many people would it take to run a 4.64–kW electric clothes dryer? (You do not need to enter any units.)

Answer 1

The number of people to power a 4.64 kW electric dryer at 95 W per person is ≈ 49 people

Explanation:

Here we have power out[put per person = 95 W

Therefore the total power required to run a electric clothes dryer = 4.64 kW

Therefore, the number of people required to perform run a 4.64 kW electric clothes dryer is given by

Number of people required = Power input required ÷ Power output per person

`Number\, of \, people \, required= (Power \, required\, by \, electric \, dryer )/(Power \, supplied \, per \, person) =( 4.64 * 1000)/(95) = 48.84 \, people`≈ 49 people.