Quote:
Originally Posted by tennisfreak
Feel the difference for yourself.
Take a 4lb weight in your hand and hold your arm straight out. Rotate the arm.
Then do it with an 8lb weight.
There is your answer.
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That 2700lb car is what makes the engine work to rotate the wheels. Yes, technically, the mass of the wheels themselvs add to the work. But then, technically, standing next to a swimming pool and peeing in it raises the water level too.