Simple Machines and Mechanical Systems

Any device that helps us do work is called.

• A producer

• A machine

• A blessing

• A contraption

Machines support many humans needs. Provide an example of a human need from the past that was met by a machine.

The 6 simple machines are...

• Lever, nail, screw, pulley, wedge, wheel & axle

• Hammer, inclined plane, screw, pulley, nail, wheel & axle

• Lever, inclined plane, screw, pulley, wedge, wheel & axle

• Inclined plane, diamond, pulley, wedge, metal, wheel & axle

Provide an example of a simple machine in real life and explain its function.

Tags

NGSS.MS-PS2-1

What is a complex machine?

Tags

NGSS.MS-PS2-1

NGSS.MS-ETS1-4

A system is a group of parts that work together to perform a function.

• True

• False

Tags

NGSS.MS-LS1-3

Each subsystem in a complex machine contains a simple machine and usually has just one function. List 2 examples of a subsystem on a pedal bike.

Tags

NGSS.MS-LS1-3

The mechanical advantage of a machine is the amount by which a machine can multiply a force.

• True

• False

The force applied to a machine is called the output force. Example: a human pushing down on a lever.

• True

• False

Input and output forces are measured in...

• Grams

• Pounds

• Newtons

• Joules