Farm Machinery

According to Gorjatchkin's formula, draft of a moldboard plow is given by $D = f W_p + k a b + \epsilon a b v^2$. A plow bottom of width $b = 30\text{ cm}$ and depth $a = 15\text{ cm}$ has static soil resistance coefficient $k = 4.0\text{ N/cm}^2$ and dynamic resistance coefficient $\epsilon = 0.002\text{ N}\cdot\text{s}^2/\text{cm}^4$. If the weight component $f W_p$ is $250\text{ N}$, calculate the total draft in $\text{N}$ at a forward speed of $2\text{ m/s}$ ($200\text{ cm/s}$).