Traditional Culture Encyclopedia - Traditional festivals - Qiqihar traditional cleaning car
Qiqihar traditional cleaning car
In the use of unicycle, the power arm is larger than the resistance arm, which is a labor-saving lever.
According to the balance condition of lever:
F×L motion =G×L resistance,
That is, F× 1m=800N×0.3m,
Solution: f = 240 n;
Therefore, the answer is: save effort; 240.
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