You can use this skill sheet to practice calculating
PDF FILE - CLICK HERE FOR PRINTABLE WORKSHEET. When using pulleys
for lifting the
In this chapter, you will learn how to
A screw is a fastener with helical threads running around it. It is the last simple
machine that was invented.
In physics and engineering,
In physics, a lever (from Old French levier, the agent noun to lever "to raise", c. f. levant) is a rigid object that is used with an appropriate fulcrum or pivot point to ...
Why do people use machines? This lesson introduces and explains the concept