Under the action of a force of 150N, the body moves so that its coordinate in the direction of the action

Under the action of a force of 150N, the body moves so that its coordinate in the direction of the action of the force changes according to the law X = 40-20t + t ^ 2 kokava body mass.

To find out the mass of the presented moving body, we apply the formula: mx = Fd / a = Fd / x (t) ”, where Fdv is the driving force (Fdv = 150 N); x (t) – the law of motion of the represented body (x (t) = 40 – 20t + t ^ 2).

Let’s perform the calculation: mх = Fdv / x (t) ” = 150 / (40 – 20t + t ^ 2) ” = 150 / (0 – 20 * 1 + 2t) ‘= 150 / (-20 + 2t)’ = 150 / (0 + 2 * 1) = 150/2 = 75 kg.

Answer: The mass of the presented moving body is 75 kg.