A gasoline engine converts 25% of the energy into useful work. To what height can a load weighing 10 tons be lifted
| November 25, 2020 | education
A gasoline engine converts 25% of the energy into useful work. To what height can a load weighing 10 tons be lifted with the help of this engine, having spent 1 liter of gasoline?
You need to calculate the amount of energy from cooling water:
Q = c * m * dt
Where m = 0.001 * 1000 = 1 kg
Q = 4200 * 1 * (100 – 20) = 336000 J Find the height: Q = mgh
h = Q / mg = 336000 / (1000 * 9.8) = 34.29 m.
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