A6 kg object falls 10 m. the object is attached mechanically to a paddle-wheel which rotates as the object falls. the paddle-wheel is immersed in 600 g of water at 15°c. what is the maximum temperature that the water could be increased to? is this a very efficient way of heating water? the specific heat of water is 4.186 j/(g* ˚c).

Explanation:

Given

Mass of object (m)=6 kg

falling height(h)=10 m

mass of water()=600 gm

temperature of water =15

specific heat of water

Let T be the Final Temperature of water

Here Object Potential Energy is converted into Heat energy which will be absorbed by water

Potential Energy(P.E.)

Heat supplied

T-16=0.234

This is not an efficient way of heating water as there is onlyincrease in temperature.