When a lever's load arm is longer than its effort arm, it is said to be at a mechanical disadvantage. Image caption, At take-off, the high jumper applies large forces to the ground through their ...

Third class lever – the effort is in the middle between the fulcrum and the load. When a lever's effort arm is longer than its load arm, it is said to have high mechanical advantage. Levers with ...

how much effort is required? Identify the type of lever used and whether it acts as a force multiplier or speed multiplier. Solution: Load arm = 20 cm, Effort arm = 12 cm. Mechanical advantage <1, so ...