Weight of 96 lb slides down an incline making a 30° angle with the horizontal. If the co...

Weight of 96 lb slides down an incline making a 30° angle with the horizontal. If the coefficient of sliding friction is μ , determine the differential equation for the velocity v(t) of the weight at time t. Use the fact that the force of friction opposing the motion is μN, where N is the normal component of the weight. See Figure 1.27.