Question

A certain lever system is only 30% efficient. What could make it more efficient? (1 point) Responses Have more than one person help to lift the lever. Have more than one person help to lift the lever. Make a longer lever that will require less force. Make a longer lever that will require less force. Use a stiffer lever to reduce energy lost bending the lever. Use a stiffer lever to reduce energy lost bending the lever. Use it with a lighter load to make it easier.

Answer 1

To make a lever system more efficient, you could primarily focus on the following options:

1. **Make a longer lever that will require less force.** A longer lever arm reduces the required input force to lift the load, which can improve efficiency.

2. **Use a stiffer lever to reduce energy lost bending the lever.** A stiffer lever minimizes energy lost to bending, making more of the input energy go towards lifting the load.

Using a lighter load could make it easier, but it doesn't necessarily improve the efficiency of the lever system itself; it just reduces the effort required to lift. Having more than one person help could also be considered a form of increasing the input force rather than improving the system's inherent efficiency.

For the most effective improvements, focus on increasing the lever length and stiffness.