In the space provided, write the name of the simple machine that best describes each of the following devices. 1. Broom 2. Steering wheel 3. Knife 4. A flight of stairs In the space provided, write the class of lever (first, second, or third that best describes each of the following devices. 5. Wheelbarrow 6. Baseball bat 7. Crowbar weighting 600 newtons 4. meter ver used by the machine. 8. Scissors 9. Rake machine Match the machines in Column I with the correct equation for mechanical advantage in Column II. Write the letter of the correct equation in the space to the left of the machine in Column I. Column I Column II Effort length 10. lever a. M. A. = height 11. inclined plane b. M. A. = number of supporting strands C. M. A. = effort arm 12. pulley system resistance arm