How do you calculate efficiency? Know the equation.
Calculate the fuel efficiency of a vehicle that can travel 350 km using 20 L of gasoline. Write only the answer and include units in your answer.
To calculate efficiency, divide the distance traveled by the amount of fuel used.
Fuel Efficiency = Distance Traveled / Fuel Used
In this case, the distance traveled is 350 km and the amount of fuel used is 20 L of gasoline.
Fuel Efficiency = 350 km / 20 L
Fuel Efficiency = 17.5 km/L
Therefore, the fuel efficiency of the vehicle is 17.5 km/L.
Explain how each of the following simple machines can be made for efficient
Lever:
Pulley:
Inclined Plane:
Keep your answer short though
Lever: A lever can be made more efficient by either increasing the length of the lever arm or placing the effort force closer to the fulcrum. This allows the lever to multiply the applied force and increase mechanical advantage.
Pulley: To make a pulley more efficient, multiple pulleys can be used in a system called a block and tackle. By increasing the number of pulleys, the effort force required to lift a load is reduced, making the task easier and more efficient.
Inclined Plane: The efficiency of an inclined plane can be improved by decreasing the angle of inclination. As the angle becomes smaller, less effort force is needed to move a load along the inclined surface, resulting in increased efficiency.