1 4 points Save Answer Which of the following is NOT a true statement? O a. The force of static friction for an object sliding along a given surface is always smaller than the force of kinetic friction for the same object sliding on the same surface. O b. The friction force has no units. O c. The friction force is always smaller than the normal force. O d. The friction force always acts along the surface on which an object moves. QUESTION 2 4 points Saved Which of the following is NOT a true statement? O a. The coefficient of static friction for a given pair of surfaces is always greater than the the coefficient of kinetic friction for the same pair of surfaces. O b. The coefficient of friction can be measured in N. O c. The coefficient of kinetic friction is equal to the ratio of the kinetic friction force to the normal force. O d. the coefficient of kinetic friction is always less than 1.QUESTION 3 In several parts of this experiment, you will set up the apparatus as shown above and, keeping the mass in the cart constant, increase the amount of mass on the weight hanger until the cart begins to slide. If the mass of the cart is 84 g, the amount of mass placed in the cart is 175 g, the mass of the hanger is 50 g, and the amount of mass required to be placed on the hanger in order to get the cart to move is 94 Q, what is the static friction force, in N, on the cart at that instant? (Hint: Complete the first two questions on your worksheet for this experiment before answering this question and the next one.) QUESTION 4 In several parts of this experiment, you will set up the apparatus as shown above and, keeping the mass in the cart constant, increase the amount of mass on the weight hanger until the cart begins to slide. If the mass of the cart is 97 g, the amount of mass placed in the cart is 204 g, the mass of the hanger is 50 g, and the amount of mass required to be placed on the hanger in order to get the cart to move is 85 9, what is the coefficient of static friction, in N, on the cart at that instant? (Hint: Complete the rst two questions on your worksheet for this experiment before answering this question and the next one.) QUESTION 5 In one portion of this experiment, you will set up the apparatus as shown above, and using the same cart, sliding on the same surface for all trials, place different amounts of mass in the cart. You will then place mass on the hanger until the cart starts to move, and use the data obtained to calculate the static friction force and the coefficient of static friction for each different value of mass in the cart. Which of the following describes the expected results for this part of the experiment, based on your knowledge of Newton's laws, and the definitions of friction force and coefficient of friction? O a. As the mass in the cart increases, the static friction force and the coefficient of static friction will both increase. O b. Both the friction force and the coefficient of static friction will remain the same as the mass in the cart increases. O c. As the mass in the cart increases, the static friction force will increase, but the coefficient of static friction will remain the same. O d. As the mass in the cart increases, the static friction force will increase, but the coefficient of static friction will decrease.QUESTION 6 A cart of mass 83.1 g with mass 45 g inside is placed on a level surface. One end of the surface is then raised gradually, so that the angle of incline of the surface gradually increases. If the cart begins to slide when the angle of incline reaches 18 degrees, what is the coefficient of static friction for this cart on this surface