contestada

How many times should the power develop by the engine of a ship increases to double is velocity i the resistance of the water to the motion of the ship increases in proportion to the square of the velocity.

Respuesta :

onyebuchinnaji

Answer:

If the ship speed is doubled, then the power developed is 8 times the initial value.

Explanation:

ship power is roughly proportional to the cube of the speed, so

P ∝ v³

If the speed is doubled, then the power developed becomes

P  ∝ (2)³ = 8 times

Therefore, if the ship speed is doubled, then the power developed is 8 times the initial value.

Otras preguntas