Task 10621.
The horizontal plane is the body weight of 1 kg. With some point it starts to operate in the direction of a constant force, the value of which varies with time according to the law F = at, where a = 0,98 N / s. The coefficient of friction of the body on the plane k = 0,2. Find a job force F in the first two seconds after the start of the movement.
Detailed solution shorthand terms, formulas, laws used in the decision, the withdrawal of the calculation formula and the response.
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