Put Inclined Planes to the Test by Sally M. Walker

Author:Sally M. Walker
Language: eng
Format: epub
ISBN: 9781512475630
Publisher: Lerner Publishing Group

Experiment Time Again!

Put the heavy weight

onto the pile of books.

Lower it back down to

the table. Lower the

weight several times.

Lowering the weight

back to the table takes

a lot of force.

It takes a lot of force to lower a heavy object.

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Next, push the weight up the board. When the weight

is near the top, let go. What happens?

PUSH YOUR WEIGHT TO THE TOP

OF YOUR INCLINED PLANE.

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The weight slides back down the inclined plane. You

don’t have to push it. The inclined plane made it easy to

lower the weight back to the table. Why was it so easy?

Gravity made it easy to lower the weight. Gravity is a

force that pulls objects toward the ground. Gravity pulled

the weight down the inclined plane.

An inclined plane makes it easy to lower a heavy object. Gravity pulls an object down an inclined plane.

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