Directions: Answer the following questions in the space provided. Show any and all necessary work. (1) For the diagram shown at right a 50 kg mass rolls down an inclined plane angled at 30 degrees. Which of the following best approximates the normal force Fnorm acting on the mass on the plane? Ffrict (A) 500 N (B) 433 N (C) 250 N (D) None of these . ......... (2) If the mass slides down the ramp at a constant speed, which of the . .. ........... 30 following best approximates the force of friction acting on the mass? gray= 500 N (A) 500 N (B) 433 N (C) 250 N (D) None of these (3) If the mass accelerated down the ramp at a rate of 2 m/s/s the frictional force is most nearly. (A) 250 N (B) 150 N (C) 100 N (D) None of these