Question

Simple machines are useful in that they

a.)Simplify tasks
b.)Create a mechanical shortcut
c.)Are easy to design and build
d.)Reduce the effort needed to accomplish a task

Answer 1

Simple machines are useful because they reduce the input force required for a task by offering a mechanical advantage, although they do not reduce the total amount of work done.

Step-by-step explanation:

How Simple Machines Are Useful

Simple machines are useful because they reduce the effort needed to accomplish a task. This is achieved by changing the amount of force you must apply to an object, and the distance over which you apply that force. While simple machines do not change the total amount of work done, they offer a mechanical advantage by multiplying the input force, allowing you to exert less force over a greater distance.

Examples of simple machines include levers, gears, pulleys, wedges, and screws. These devices have a common purpose: to make tasks easier by reducing the input force required. The concept of mechanical advantage, which is the ratio of output to input force magnitudes, is critical to understanding the effectiveness of simple machines.