contestada

To keep a conveyor belt moving when it transports luggage requires a greater diving force than for an empty belt. What additional driving force is needed if the belt moves at a constant speed of 1.5 m/s and the rate at which luggage is placed on one end of the belt and removed at the other end is 20kg/s?

Respuesta :

umohduke14

Answer: a) 30 Newton b) 45 Watt

Explanation:

F = rate of change of mass × velocity change

F = (20 kg/s)(1.5m/s) = 30 N

P = force × rate of displacement = (30 N)(1.5m/s)= 45W

Otras preguntas