Appreciating machines

[Lesson No. 25]

The LEVER [Simple Machine]

The Tower CraneThis is NOT a simple machine, though. However, concepts from the last two chapters are incorporated in its construction.

STABILITY

PRINCIPLE OF LEVER

The Tower CraneThis is NOT a simple machine, though. However, concepts from the last two chapters are incorporated in its construction.

STABILITY

“The CG of the equipment has to be directly above its base area.”

added LOAD

The Tower CraneThis is NOT a simple machine, though. However, concepts from the last two chapters are incorporated in its construction.

PRINCIPLE OF LEVER

“The moment of load is equal to the moment of effort if an object is in equilibrium [balanced].”

added LOAD

LEVERS are everywhere!AT HOME

IN THE OFFICE

IN SCHOOL

HERE AT THE PHYSICS LAB

Did you bring a LEVER today?

Triple-beam balance

Platform balance

LEVERS are everywhere!… have been helping MAN do his work EASIER.

TREBUCHET

CATAPULT

MARSHMALLOW WAR [LOL]“Kids, we are going to WAR, today!”

MARSHMALLOW WAR [LOL]“How can catapults throw heavy

objects to different target locations!”

MARSHMALLOW here

RUBBER BAND

FULCRUM

MARSHMALLOW WAR [LOL]“How can catapults throw heavy

objects to different target locations!”

MARSHMALLOW here

RUBBER BAND

FULCRUM

MARSHMALLOW WAR [LOL]“How can catapults throw heavy

objects to different target locations!”

MARSHMALLOW here

RUBBER BAND

FULCRUM

MARSHMALLOW WAR [LOL]“How can catapults throw heavy

objects to different target locations!”

MARSHMALLOW here

RUBBER BAND

FULCRUM

MARSHMALLOW WAR [LOL]“Now, let us PREPARE for WAR. Build your CATAPULTS [and answer the guide questions in the WORKSHEET

provided.]”

Time: 30 minutes

MARSHMALLOW WAR [LOL]“It’s TIME to check your UNDERSTANDING.”

Time: 5 minutes

W.E.B. [Week-End Blog]URL: http://fairviewscience web.wordpress.com

“Visit our BLOGSITE at anytime convenient between tonight and Sunday for the details about our REVISIONS and PRACTICE QUESTIONS about LEVER SYSTEMS.”