Question

PROVA THAT {2=99}...
PLEASE, GIVE THE RIGHT ANSWER.
​

Answer 1

Answer:The force required to keep the belt moving is equal to the rate of increase of horizontal momentum of the sand.

Or, F = rate of change of mass × velocity change

=> F = (5 kg/s)(6 m/s)

=> F = 30 N

Now,

Power = work done per second

=> P = force × rate of displacement

=> P = Fv = (30 N)(6 m/s)

=> P = 180

Step-by-step explanation:

The force required to keep the belt moving is equal to the rate of increase of horizontal momentum of the sand.

Or, F = rate of change of mass × velocity change

=> F = (5 kg/s)(6 m/s)

=> F = 30 N

Now,

Power = work done per second

=> P = force × rate of displacement

=> P = Fv = (30 N)(6 m/s)

=> P = 180 W