Please show step by step solution. Provide 3 decimals for the final answer.

3. If the mechanical advantage (MA) = 0.25, how many pounds of force do you need 13 to put on the effort arm, in order to lift a box which weighs 500 pounds? 4. A plank 10 feel long is used to lift a load of 200lb. (Hint - draw out lever diagrams for each scenario) a) What is the minimum force needed to lift the load, if it is 3 feet 14 from the fulcrum? Assume a class one lever and 10 feet between applied effort and load. b) What is the minimum force needed to lift the load, if it is 3 feet /4 from the fulcrum? Assume a class two lever and the fulcrum is 1 foot from the end.FR VR 1. The total length of a lever is 6 meters. The fulcrum is located 120cm from the 13 point of effort (A). Calculate the mechanical advantage of the lever. force net ad to lift the 2. Total length of a lever is 7.75m. Assume that the length of the load arm of the lever is 5.5m. What is the mechanical advantage of the lever? LOADc) What is the minimum force needed to lift the load, if it is 6 feet from the fulcrum and force is applied 3 feet from the fulcrum? /4 Assume a class 3 lever. 5. A lever 9m long has its fulcrum at one end. An object with a mass of 60kg rests on the lever, 2m from the fulcrum. Calculate the force in Newtons required to lift /4 the object. 6. Calculate the MA and output force of the brake pedal lever in the diagram. 14 MASTER CYLINDER FULCRUM 3IN. Output Force = ? 13.5 IN LEVER 10-LB FORCE