Question

Sort the following quantities as known, to find, or unneeded. Let m and v be the mass and speed of the car, respectively: mu_s is the coefficient of static friction, r is the radius of the circular path, n is the magnitude of the normal force acting on the car, and summation F_z is the x component of the net force acting on the car Use the information you collected in the Prepare step to find the net force on the car.

Answer 1

Since the car travel around a circular path, the net force on the car must be equal to centripetal force on the car. F_net = m v^2/r = (1500)(30)^2/(150) = 9000 N Since the car travel in a circular path, the force on the car is always directed towards the center of the circular path. We know the mass of the car m, radius of the circular path r, and speed of the car v. Therefore, these quantities come under known. To find the net force on the car we didn't require the values of static coefficient mu_s and normal force N. Thus, these two quantities come under unneeded. The remaining quantity horizontal component of the net force Sigma F_x is come under to find. Known To find Unneeded Mass of the car m Speed of the car v Radius of the path r Horizontal component of net force Sigma F_x Coefficient of static friction mu_s Normal force N.