Volume in one second = 2 * 4 / 1000
Mass = Density * Volume = 1*1000*0.008 = 8KG
Pt = mgh = 8 * 10 * 2 * t
P = 160W
The meaning of the question is not very clear. According to experience, it should be the power of gravity.
The amount of water flowing from a height of 100 meters is tons per day. A 3 ton-hour water tank can hold 3,600 tons. What type of water wheel should be used to generate 97.2 kilowatt hours of electricity per hour. ? To lift a ton of water 100 meters, the engine overcomes the water's gravity and works on the water. The work done by the engine on the water can be calculated using the work calculation formula W=Gh=mgh. So W=Gh=mgh=1000kg*9.8N/kg*100m=98000J, and 1 degree=1KWH=3600000J Therefore, the electricity used to lift 1 ton of water 100 meters is 98000J/3600000J=0.027 degrees. can be 3600 *0.027=97.2 degrees.