Thread: work problem

A trough is 5 feet long and 1 foot high. The vertical cross-section of the trough parallel to an end is shaped like the graph of from to . The trough is full of water. Find the amount of work in foot-pounds required to empty the trough by pumping the water over the top. Note: The weight of water is pounds per cubic foot.

I know this problem could be solved by

Work = density * weight * distance traveled by the center of the mass.

I'm having trouble finding the weight. I'm not sure if i should



please help

Originally Posted by fastcarslaugh

A trough is 5 feet long and 1 foot high. The vertical cross-section of the trough parallel to an end is shaped like the graph of from to . The trough is full of water. Find the amount of work in foot-pounds required to empty the trough by pumping the water over the top. Note: The weight of water is pounds per cubic foot.

I know this problem could be solved by

Work = density * weight * distance traveled by the center of the mass.

I'm having trouble finding the weight. I'm not sure if i should



please help

This post seems to be missing important information...

--Chris

no

it's not missing any information
it's straight from the book

Originally Posted by fastcarslaugh

A trough is 5 feet long and 1 foot high. The vertical cross-section of the trough parallel to an end is shaped like the graph of _____ from __ to __ . The trough is full of water. Find the amount of work in foot-pounds required to empty the trough by pumping the water over the top. Note: The weight of water is pounds per cubic foot.

I know this problem could be solved by

Work = density * weight * distance traveled by the center of the mass.

I'm having trouble finding the weight. I'm not sure if i should



please help

I have inserted blanks where the important information is missing...

--Chris