Inclined Planes (A simple Machine) Guided Lesson

Inclined Planes

Learning Goal: Understand how Inclined Planes (a simple machine) can be used to reduce the amount of force to move an object.

• No moving parts

• A sloped surface used to move objects

• Changes the amount of force needed to move objects

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What is an inclined plane?

Load

The object that is being moved or lifted

Work

Work is the amount of force it takes to move an object over a distance.

Mechanical Advantage

The amount of help or advantage gained by using a simple machine

Slope

The steepness or gradient of an inclined plane that provides a mechanical advantage. 

An applied force to bring desired change to the position (push or lift) of the load.

Effort/ Force

a scale used to measure force in Newtons

Spring Scale

Inclined Plane

Any slope or ramp that makes it easier to lift something.

A flat supporting surface tilted at an angle, with one end higher than the other, that helps raise or lower a load.,

Ramp

The steeper the inclined plane, the more force needed. However, it is a shorter distance.

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​Steeper Inclined Planes

The less steep an inclined plane is, the less force is required to do the same amount of work, but distance increases.

When the distance a load has to travel increases, the force needed to move the load decreases.

​Less Steep Inclined Planes

Draw

Draw a inclined plane

Multiple Choice

Which is an inclined plane?

Multiple Choice

The inclined plane makes work easier by _____ the amount of effort that must be applied to raise or lower a load.

• increasing

• accelerating

• reducing

Multiple Choice

The longer the inclined plane, the ___________________ to move the object

• the less force you need

• the more force you need

Multiple Choice

Which inclined plane requires the most force to push the ball to the top?

Multiple Choice

What is a disadvantage of using an inclined plane to lift a heavy object?

• The object must be moved a greater distance.

• It takes less effort to move the object.

• Many objects are difficult to lift straight up.

Multiple Choice

Which of the following will require the most force to move the load up the inclined plane?

• c

• s

Multiple Choice

When force is used to move an object across a distance, this is called...

• balanced force

• power

• work

Multiple Choice

Which inclined plane requires the most effort to push the ball to the top?

If the inclined plane has a longer distance, it will require LESS force to do the same amount of work. ​

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Longer Inclined Planes

If an inclined plane has a shorter distance, it will require MORE force to do the same amount of work.

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Shorter Inclined Planes

Multiple Choice

The longer the inclined plane, the ___________________ to move the object

• the less force you need

• the more force you need

Multiple Choice

Which of the following will require the least force to move the load up the inclined plane?

Multiple Choice

What is a disadvantage of using an inclined plane to lift a heavy object?

• The object must be moved a greater distance.

• It takes less effort to move the object.

• Many objects are difficult to lift straight up.

Multiple Choice

How can you decrease the effort force needed to push a box to the top of the ramp?

• increase the length of the ramp

• increase the height of the ramp

• decrease the length of the ramp

Multiple Choice

Why would the longer ramp require less force?

• It spreads the force over distance

• It decreases the amount of work done

• It decreases the mass of the load

Multiple Choice

Which of the following decreases when an object is moved using an inclined plane?

• The distance the object moves.
• The pull of gravity on the object.
• The force needed to move the object.

Multiple Choice

How does distance change the effort when using an inclined plane?

• as distance increases, effort decreases

• as distance decreases, effort decreases

• as distance increases, effort increases

Multiple Choice

The greatest amount of force is required to move the metal block up which inclined plane?

• A

• B

• C

• D

Multiple Choice

Which of the following statements best describes the situations?

• Less force will be needed to move the box in Situation 2

• Less force will be needed to move the box in Situation 1

• More force will be needed to move the box in Situation 2

• will take the same amount of force to move both boxes.