contestada

You raise a bucket of water from the bottom of a deep well at a constant speed. If your power output is 111 W, and the mass of the bucket and the water in it is 3.00 kg, with what speed can you raise the bucket

Respuesta :

Answer:

v=   3.7 m/s (approx)

Explanation:

given

output power  = 111 W

mass of bucket and water = 3 kg

speed v = ?

we know

[tex]power = force . velocity[/tex]

[tex]P = f.v[/tex]  ................(i)

weight of bucket = 3×10 = 30

  we use [tex]g = 10 m/s^2[/tex]

weight of bucket is force  = 30 N

so velocity will be from (i) equation

[tex]v =\frac{P}{f}\\[/tex]

[tex]v =\frac{111}{30}[/tex]

v=   3.7 m/s (approx)