Simple Machines
IMA
Classes of Levers
Formulas
Input
Output
100

An inclined plane wrapped around a cylinder

What is a Screw

100

The ideal mechanical advantage is a theoretical situation where a machine will give 100 percent output in the absence of _______

What is friction

100

The class of the lever is identified by the location of the _____

What is the fulcrum?

100

Input distance divided by output distance

What is the IMA

100

Force exerted on a machine

What is input force?

200

An axe is an example of this simple machine

What is a wedge

200

Because of friction, the ______ is always less than the ideal mechanical advantage.

What is actual mechanical advantage?
200

The fulcrum is always between the effort force and the resistance force (like a teeter-totter) in this class lever.

What is a first-class lever?

200

Dividing work output by work input

what is efficiency?

200

The number of times that the machine increases the input force is known as this

What is the mechanical advantage?

300

A steering wheel on an automobile is an example of which simple machine

What is a wheel and axle?

300

True or False:

Calculating the ideal mechanical advantage is affected by friction

What is false?

300

A wheel barrow is an example of a wheel and axle and this class lever

What is a second-class lever?

300

Unit for Work

What is the Joule

300

By adding a lubricant to a simple machine the efficiency will increase because of this

What is reducing friction?

400

Two or more simple machines makes a _______

What is a compound machine

400

The IMA of a pulley system is equal to this

What is the number of rope segments supporting the load?

400

The class of lever where the effort force and resistance force are on the same side

What is a third-class lever

400

Power is measured in this

What are Watts?

400

The work input is equal to the work output in this type of pulley

What is a fixed pulley?

500

A machine is a device that can multiply _______

What is Force?
500

The IMA of a wheel and axle is found by dividing the radius of the ______ by the radius of the _______

What is the wheel by the axle?

500
A fixed pulley is a variation of this class lever

What is a first-class lever?

500

The rate at which work is done

What is Power?

500

The IMA is 2 because the work input is half of the work output in this type of puley

What is a Moveable Pulley?

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