hacker804 said:Homework Statement
A motor,rated 100W,runs from a source voltage 120V.If 2A of current flows through it then calculate the mass of water pumped by it to a height of 10m in 5 seconds.
Homework Equations
P=IV
P=E/t
E=mgh
The Attempt at a Solution
P=IV
P=mgh/t
mgh/t=IV
m=IVt/gh
m=(2)(120)(5)/(9.8)(10)
m=12.24kg.
Is my solution correct and does this question make correct sense?
Thanks.
hacker804 said:No.its 240W.i asked my teacher and he said there was a typo in the question.
The mass of water pumped by a motor can be calculated by multiplying the density of water (which is approximately 1 kg/L) by the volume of water pumped in liters. This will give you the mass of water in kilograms.
The formula for calculating the volume of water pumped by a motor is V = Q * t, where V is the volume in liters, Q is the flow rate in liters per second, and t is the time in seconds.
Mass refers to the amount of matter in an object, while volume refers to the amount of space an object occupies. In the case of water, mass is measured in kilograms and volume is measured in liters.
The speed of the motor affects the mass of water pumped by changing the flow rate. The higher the speed, the faster the motor can pump water, resulting in a higher flow rate and, therefore, a higher mass of water pumped.
Yes, other factors that can affect the mass of water pumped by a motor include the efficiency of the motor, the size and design of the pump, and any resistance or obstacles in the water flow. These factors can impact the flow rate and ultimately, the mass of water pumped by the motor.