How Do You Lift a Lion?

How Do You Lift a Lion?

by Robert E. Wells
     
 

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Explore the functions of levers, wheels, and pulleys, and learn how to lift a lion, pull a panda, and deliver a basket of bananas to a baboon birthday party!

Overview


Explore the functions of levers, wheels, and pulleys, and learn how to lift a lion, pull a panda, and deliver a basket of bananas to a baboon birthday party!

Editorial Reviews

Children's Literature - Karen Saxe
This book aims to introduce some of the theories of physics to very young readers. The concepts are those of gravity, leverage, friction, and pulleys. Each is accompanied by some physical problem involving animals. For example, the book starts out by asking how one might lift a lion. Answer: put him on a platform and use a lever. Then, if one wants to lift more lions, one would need a longer lever. This is a clever little book, with nice pictures.
School Library Journal
Gr 2-4A basic introduction to levers, wheels, and pulleys. As two children lift a lion, pull a panda, and deliver a basket of bananas to a baboon party, Wells offers explanations for how and why these simple machines work. The hand-lettered text identifies technical terms such as fulcrum, force, friction, and other such words (also included in a glossary). One might quibble with some of the statements, such as "Leverage adds force to your own strength." Also the pen-and-acrylic cartoons are mediocre in quality and are merely adequate at depicting the concepts. A great idea with a fair-to-middlin execution.Virginia Opocensky, formerly at Lincoln City Libraries, NE
From the Publisher

"The humorous illustrations both inform and amuse the reader."

The Horn Book Guide

"A basic introduction to levers, wheels, and pulleys."

School Library Journal

Product Details

ISBN-13:
9781619131590
Publisher:
Weigl Publishers, Incorporated
Publication date:
07/28/2012
Edition description:
Reprint
Pages:
32
Product dimensions:
10.20(w) x 7.10(h) x 0.30(d)
Age Range:
4 - 8 Years

Related Subjects

Read an Excerpt

How Do You Lift a Lion?


By Robert E. Wells

ALBERT WHITMAN & Company

Copyright © 1996 Robert E. Wells
All rights reserved.
ISBN: 978-0-8075-3421-2


CHAPTER 1

DID YOU EVER TRY TO LIFT A LION?

You'd have to be awfully strong.

It's because of the force of GRAVITY. Gravity pulls objects downward. When that object is as massive as a lion, it pulls pretty hard.

With a LEVER, you can lift a heavy weight with much less effort.

The main part of a lever is a bar or rod which balances, or pivots, on a FULCRUM.

If the FORCE side is longer than the LOAD side, you will have LEVERAGE. Leverage adds force to your own strength. With a force side this long, you could lift a lion!

So, if you had a lever with a handle THIS long, maybe you could lift them a little!

Gravity is pulling down on that panda. And there's also FRICTION between the ground and the pallet. Friction, or resistance, happens when two surfaces rub together. The more weight pushing on the surfaces, the more friction there is.


(Continues...)

Excerpted from How Do You Lift a Lion? by Robert E. Wells. Copyright © 1996 Robert E. Wells. Excerpted by permission of ALBERT WHITMAN & Company.
All rights reserved. No part of this excerpt may be reproduced or reprinted without permission in writing from the publisher.
Excerpts are provided by Dial-A-Book Inc. solely for the personal use of visitors to this web site.

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