Name: Taylor Cooper Period: 2 Foundations of Technology Online Distance Learning: The Engineering Design Process File DL.1.1: Mechanical Advantage The Engineering Design Process Mechanical Advantage Review Date: 3/24/20 Directions: Use the appropriate equation to answer the following questions. All answers should be recorded below or in your engineering design journal. Remember to show all work. 1. A lever has an effort arm that is 8 meters long and the resistance (load) arm that is 1.5 meters long, how much effort is needed to lift a 200 Newton weight? 114.67 N 2. Two boys want to balance a seesaw perfectly. One boy weighs 120 pounds and is sitting four feet from the fulcrum. The other boy weighs 80 pounds. Where should the lighter boy sit to balance the seesaw? 6ft 3. You wish to lift a 12,000 lb stone by a vertical distance of 15 ft. Unfortunately, you can only generate a maximum pushing force of 2,000 lb. a. What is the amount of work you must input in order to move the stone? b. What is the actual mechanical advantage (AMA) required by a machine to complete the work c. You build a ramp to create the ideal mechanical advantage. What is the length of the ramp in feet? 4. You wish to lift a 400 lb car engine a vertical distance of 3 ft using a strong rope. Unfortunately, your hand crank winch can only generate 100 lb of tension in your rope. In order to overcome this obstacle, you use a multiple pulley system (block and tackle) to lift the engine. a. What is the mechanical advantage of this system? b. What length of rope is required to complete the work? 5. A wheel is used to turn a valve stem on a water valve. The wheel radius is 4 inches and the axle radius is .25 inches. a. What is the mechanical advantage of the wheel and axle? 1 b. How much resistance force can be overcome when an effort of 6 lbs is applied to the wheel of the water valve in this problem? 6. A mechanic uses a screwdriver with a handle of 1.5in to install a ¼ -20 UNC bolt into a mechanical brace. What is the mechanical advantage of the system? What is the resistance force if the effort force is 5lbs. 7. Find the Mechanical Advantage and the maximum separation load for a wedge (length = 6 inches and height = 3 inches) used to split a piece of wood. The effort load applied is 80 lb.