What is an effort arm ?

Label the load arm and effort arm in the figure.

Define fulcrum, load arm and effort arm of a lever.

Find the ratio of the load arm to that of the effort arm of a second-order lever if its mechanical advantage is 5.

Define MA in terms of load arm and effort arm.? When does MA become more than or less than 1?

Load and effort

Draw a diagram of a lever which is always used as a force multiplier. How is the effort arm related to the load arm in such a lever ?

In a second-order lever, if the length of the load arm is 5 cm, the length of its effort arm cannot be _______.

If MA of a simple machine is greater than 1, then effort arm is _____ than the load arm.