If a load of 50 kg is lifted using a lever with a mechanical advantage of 5, what is the effort required?

To determine the effort required to lift a load using a lever with a given mechanical advantage, one can use the formula:

[ \text{Effort} = \frac{\text{Load}}{\text{Mechanical Advantage}} ]

In this instance, the load is 50 kg and the mechanical advantage of the lever is 5. By applying the formula:

[ \text{Effort} = \frac{50 \text{ kg}}{5} = 10 \text{ kg} ]

This calculation indicates that an effort of 10 kg is necessary to lift the 50 kg load when the lever's mechanical advantage is taken into account. The concept of mechanical advantage means that due to the lever's design, less effort is required to lift a heavier load, allowing the user to exert a smaller force over a longer distance. This principle is essential in understanding how levers function to make work more manageable.

The other choices do not satisfy the relationship defined by the mechanical advantage and the load, resulting in values that don't accurately reflect the required input effort for the specified output load with the given mechanical advantage.