Calculating Work


by fubag
Tags: work
fubag
fubag is offline
#1
Oct13-07, 05:40 PM
P: 105
Calculate the work (in joules) required to pump all of the water out of tank. Assume that the tank is full, distances are in meters, and the density of water is 1,000 kg/m^3.


The conical tank (pointing downwards) has water exiting a spout feet above the tank. Find the work down in removing the water. Radius of tank = 5 meters, height = 10 meters, and then spout is 2 meters above this.

Well, I am not sure how to start this.

How can I find the volume of a slice? I also noticed that we have enough information to just solve for the Volume of the cone = 1/3pir^2h= 250pi/3.

If Work = Force * distance.

Force = g*density*volume
so can I just plug it in here?

F = (9.8)(1000)(250pi/3)

And then distance it needs to travel is 12 feet? 10 to go to the top of the conical tank, and plus 2 to exit the spout?


I am not sure, any help will be deeply appreciated.
Phys.Org News Partner Science news on Phys.org
Going nuts? Turkey looks to pistachios to heat new eco-city
Space-tested fluid flow concept advances infectious disease diagnoses
SpaceX launches supplies to space station (Update)

Register to reply

Related Discussions
Calculating Work Introductory Physics Homework 1
calculating work done by friction Introductory Physics Homework 3
Calculating Work Advanced Physics Homework 3
Calculating the work done by friction Introductory Physics Homework 11
Calculating Net Work Introductory Physics Homework 3