contestada

A motor lifts a 500kg elevator a height of 100 m at a constant speed in 50 secs. How much power did the motor supply

Respuesta :

Ritmeks

Answer:

9,800 watts

Explanation:

The first step is to calculate the force

F= mg

= 500 × 9.8

= 4,900 N

The next step is to calculate the work done

= 4,900 × 100

= 490,000 joules

Therefore the power can be calculated as follows

Power= work done /time

= 490,000/50

= 9,800 watts

Otras preguntas