Question

A box is placed on a horizontal surface. The surface rises from one edge gradually until the box begins to slide with constant speed as shown in the figure. At what angle to the horizontal does this occur if the kinetic friction coefficient is 0.450?

na superficia horizontal. La superficie se levanta de uno de los deslizarse con rapidez constante como se muestra en la figura v = cte que angulo con respecio a la horizontal ocurre esto si el coeficiente de fricción cinética es 0.45029 Seleccione las unidades

Answer 1

Moving at a constant speed means that it will be experienced no net force

Now mgsingA = uN

Also N = mgcosA

Where A is the angle with the horizontal

mgsinA= umgcosA

tanA = u

A = tan^-1(0.450) = 24.23