Third law
On 23/08/2019 08:14, The Natural Philosopher wrote:
On 22/08/2019 21:34, Bill Wright wrote:
How come it needs much less effort to hold an electric sander against
the work than it does to do the work manually?
Bill
because in theory holding something in place does no work at all
Work = force timesĀ* distance.
All force, no distance
An infintely large infinitely strongĀ* helicopter could hover with no
power input.
With infinite gravity so it wouldn't hover.
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