- #1
Thom_Silva
- 47
- 1
I know that the power of an engine is equal to (rpm*torque)/ 9.54 (SI
units). But does this mean that an engine when turned on is outputting the same amount of energy per unit time, every time ? . What happens when we press the gas pedal, does the power output increases? When i drive my car faster, the fuel consumption increases, is that due only to dissipative forces, or does the power output also increases.
Another thing:
When we run, for example 1 km , we do a certain amount of work. Say that instead of running we walk the same distance. In which occasion do we spend more energy? (regarded that the only force in play is gravity, and there no resistive forces )
Thank you in advance :)
units). But does this mean that an engine when turned on is outputting the same amount of energy per unit time, every time ? . What happens when we press the gas pedal, does the power output increases? When i drive my car faster, the fuel consumption increases, is that due only to dissipative forces, or does the power output also increases.
Another thing:
When we run, for example 1 km , we do a certain amount of work. Say that instead of running we walk the same distance. In which occasion do we spend more energy? (regarded that the only force in play is gravity, and there no resistive forces )
Thank you in advance :)