Termochem problem. Work required to heat water

[Dars]

Homework Statement

"You want to heat 1 L of water by 10 ºC so you heat it with a mechanical egg beater that is powered by a 1kg mass on a rope over a pulley. How far does the mass have to descend to supply enough work for heating the water?

Homework Equations

delta T = 10degC
delta C = delta Q / delta T
Work in gravity is: integ x_f / x_i (mg)dx

The Attempt at a Solution

I don't understand how to get the work. If i knew delta U then I could use U = q+w. So i am stuck as to where to start. Please help me get started..thanks

 

[Borek]

It is just an energy conservation problem, q=w, nothing more fancy.