# What is the formula for calculating ideal mechanical advantage?

## What is the formula for calculating ideal mechanical advantage?

(b) The ideal mechanical advantage equals the length of the effort arm divided by the length of the resistance arm of a lever. In general, the IMA = the resistance force, Fr, divided by the effort force, Fe. IMA also equals the distance over which the effort is applied, de, divided by the distance the load travels, dr.

## What is the formula for finding the mechanical advantage of an inclined plane?

To find the ideal mechanical advantage of an inclined plane, divide the length of the slope by its height.

## What is the mechanical advantage of a ramp?

The mechanical advantage for a ramp is the ratio of the force applied to the output force. By conservation of energy, the mechanical advantage can be expressed in terms of the distance traveled.

## What is a mechanical advantage less than 1?

Mechanical advantage is defined as the resistance force moved divided by the effort force used. Sometimes the mechanical advantage of a machine is less than one. That is, a person has to put in more force than the machine can move.

## What is the ideal mechanical advantage of a ramp?

An ideal mechanical advantage of 3 means that the ramp ideally (in the absence of friction) multiplies the input force by a factor of 3. The trade-off is that the input force must be applied over a greater distance than the object is lifted.

## Does a ramp reduce the amount of work?

Moving the box up a ramp—which is a machine—helps you do the work by reducing the force you need to lift the box.

## What machine has a mechanical advantage of less than 1 Why would it be useful?

It is possible to have a mechanical advantage of less than 1. This happens when the input force is greater than the output force. A hockey stick (Figure 3), a class 3 lever, requires an input force much greater than the output force.